Do bodies acquire acceleration only by the action of a force?

You are correct that according to Newton's second law of motion, a body at rest will remain at rest unless acted upon by an unbalanced or resultant force. However, when a body is in contact with a rough (non-smooth) surface, the force of friction acts on the body, and the friction force can be greater than the force of static friction, which acts to prevent motion. When a body is in contact with a rough surface, the friction force between the body and the surface is made up of many small forces acting in random directions. These small forces result in a net force that acts parallel to the surface in the opposite direction of motion. This net force is known as kinetic friction, and it acts to oppose motion. When a force is applied to a body in contact with a rough surface, the force of friction also increases, in order to balance the net force acting on the body. Once the net force acting on the body exceeds the force of kinetic friction, the body will begin to move. The body will continue to move as long as the net force acting on it exceeds the force of kinetic friction. In summary, if a body is in contact with a rough surface, the force of friction is made up of many small forces acting in random directions, these small forces result in a net force that acts parallel to the surface in the opposite direction of motion. This net force is known as kinetic friction and it acts to oppose motion. When a force is applied to a body in contact with a rough surface, the force of friction also increases, in order to balance the net force acting on the body. Once the net force acting on the body exceeds the force of kinetic friction, the body will begin to move.

Yes, according to Newton's second law of motion, a body can only acquire acceleration when acted upon by a net force. The second law states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. Therefore, if there is no net force acting on an object, it will remain in a state of rest or uniform motion. If a force is applied to an object, it will accelerate in the direction of the force. The greater the force applied, the greater the acceleration of the object. It's worth noting that some external factors, such as friction or air resistance, can also affect the acceleration of an object. These forces can either oppose or enhance the applied force, resulting in a net force that affects the object's acceleration.

You are correct that according to Newton's second law of motion, a body at rest will remain at rest unless acted upon by an unbalanced or resultant force.the acceleration of an object is dependent upon both force and mass. the biophysics has a lot to do with it also because is the Studies life at all levels, from atoms and molecules to cells, organism and environment.

Because there is most likely the force of gravity (weight) acting on the body.

No, bodies can acquire acceleration through other means such as gravity, friction, and air resistance.

Yes!, but he concept of force is not limited to just physical contact between objects. There are also non-contact forces such as gravity, electromagnetic forces, and nuclear forces, which can all cause acceleration in objects.

In terms of energy, when a body is acted upon by an external unbalanced force, this force does work on it, and then a quantity of enegy is transferred to this body and makes it to accelerate (acquire an acceleration). Frictional force is a dissipative force that does resistive work on the body and trandforms this energy into heat until the body loses its energy stops.

According to the given situation, there may be the following possibility: In presence of opposing frictional force, the body continues in motion due to the initial momentum acquired. In this case, the body will stop after some time due to retarding frictional force. In this case also Newton's second law is applicable; i.e. the rate of change of momentum is equal to the frictional force.

If only friction force is acting on body and no other force is acting on a moving body on a rough surface, the body will stop after covering some distance and it will not. Move further

Yes, bodies acquire acceleration only by the action of a force. This is described by Newton's Second Law of Motion, which states that the acceleration of an object is directly proportional to the net force applied to it and inversely proportional to its mass. Mathematically, this is expressed as F = ma, where F is the net force acting on the object, m is its mass, and a is the acceleration it experiences. Therefore, if no force is acting on an object, it will remain at rest or move at a constant velocity. In other words, an entity will not spontaneously start accelerating without any external force acting on it.

Although the surface in which a body moves is basically considered. But when an object moves with a force acting against its movement, the surface density doesn't affect it cos its like opposite reaction and it's only based on the mass and acceleration of that body

This is an interesting question, if I understand correctly. Friction is a reactive force so it matches, until it can't, any external force acting on it. Friction doesn't apply until the object is made move and then it acts to oppose the motion. I'm not sure if I fully understand the question but I hope this helps.

A body will remain at rest, if there is no resistant force. When there is a resultant force, the body will move with an acceleration. If a body is moving but with no resultant force, it can still move, but will move with no acceleration. Therefore, think of it is as, resultant force =acceleration. No resultant force =no acceleration (that can mean moving OR stationary). With a rough plane, an object can still move through it, given there is a force that is at least equal to the fictional force! If that’s the case, the object will move at constant speed OR remain stationary (depending on what the object was doing before) If the fictional force was larger than the pushing force, and opposite to it, the object will decelerate and eventually stop. Of the functional force was smaller than the pushing force, we have a resultant force in the direction of the pushing force, and so we would see an acceleration in the same direction as the pushing force. To answer your question, if there was ONLY a fictional force, the fictional force will be larger than the pushing force (0N) and do that object will decelerate or move backwards. Other way to think about it is F=M x a F = THE RESULTANT FORCE If there was a resultant force, M x a will have to equal it. If there was 0 resultant force, m x a will have you equal 0. Mass will always be a number, so acceleration will HAVE to be 0. Hope this helps,

Sorry autocorrect. First sentence, ignore it. It’s meant to stay, a body will remain at rest or at constant speed if there is no RESULTANT force.

Frictional force in this case is an opposing force but for the body to move from It initial location, another force which is greater than the frictional force must be applied. That is why the Newton's law law emphasis on resultant force which means net force(F - Fr) = Mass *Acceleration. Resultant force is what produces the acceleration of the body.

An object would continue to remain at rest or a uniform motion except acted upon by and external force. This mean that to put the object at halt or equilibrium, the external frictional force must be equal to the force experienced by the body. Ditto a force greater than the weight of the object must be exerted on the object to make it accelerate or move from its halt state.

The particles accelerate because they are being acted on by the forces. In the absence of forces, a particle will not accelerate, that is, it will move at constant velocity.

Yes,by newton 's first law F=m*a,body gets acceleration only if force exist otherwise acceleration is zero.

I think at this level you need to understand force is a vector quantity so Ffriction >Fapplied please don't confuse as you think friction is acting downward and you are applying force horizontally. Friction always acts against the applied force, thus a line of force always remains straight. so you need to apply a force more significant than the frictional force to make the body move.

This friction force only appears opposite when there is an attempt to move and when its maximum value is exceeded (normal force times factor) the body starts to move.

Great question Kylian! The friction force will only act on the body if there is a force acting on the body in the first place. Newton said RESULTANT force, which means the force that acts once all other forces has been taken into consideration. This means that once the force acting on the body is large enough to overcome the friction force, then the resultant force will be larger than the friction force, and therefore the overall force causes that body to accelerate. If you place a block on a surface and increasingly push it harder and harder, you will see that initially, the block will not move. Once the block starts to move, you know that at this point the friction force is smaller than the force you are pushing it, meaning the resultant force is greater then 0, and therefore the block moves. I hope this helps.

According to newtonian physics absence of acceleration in system of particles or particle is the proof that there is no unbalanced external force acting on that system of particles or particle .F =ma put a=0 then m×0=0

Yes. An external force (for a system of bodies). However, if you ask such a question, this means you heard/read a hypothesis that this may not be the case. Would you, please, write the situation? Not all the forces are manifest.

Bodies acquire acceleration by the action of an externally applied force which is correct, however, we should keep in mind that every object always has acceleration due to gravity represented by "g". Now your first part of the question is correct but the answer for the second part is that frictional force always comes in place whenever a body moves by an externally applied force. so when there is no external force, the body remains in its position and when there is an externally applied force greater than the frictional force, the body starts moving.

According to my opinion, the answer is yes, either the acceleration is due to some linear force or it is due to gravitational force. Only the body moves when forces are unbalanced on it.

By Newton's Second law F=ma. The force applied to the body must be greater than the opposing frictional force so that the body will be in motion

if the only force acting on a body moving on a rough plane is the force of friction, it is still possible for the body to move if the force of friction is not strong enough to stop it, and the net force acting on the body is non-zero.

If a body moves on the surface against the frictional force it means that it has finite speed acquired from some force that pushed it in this direction. The body will come to a stop eventually since the frictional force is decelerating the body according to Newton's second law. It will not however move in the opposite direction because as soon as your speed becomes zero, the frictional force is gone (it is proportional to the speed of the body).

This statement is a simplified version of Newton's Second Law of Motion, which states that the acceleration of an object is directly proportional to the force applied to it, and inversely proportional to its mass. More specifically, the statement "bodies acquire acceleration only when acted upon by a force" means that an object will not change its state of motion (i.e. acceleration) unless there is a net force acting upon it. In other words, an object at rest will remain at rest, and an object in motion will continue in a straight line at a constant speed unless a net force acts upon it. It's also important to note that the direction of the force applied will affect the direction of the resulting acceleration. For example, if a force is applied to an object in the opposite direction of its motion, the object will slow down; if the force is applied in the same direction as its motion, the object will speed up.

Yes according to Newtons Second Law of Motion. F=ma. Body will accelerate when force will act on it otherwise it will remain on rest and will move with constant velocity.

Yes you are right that is possible just Because of the second law of motion.

yes according to Newtons second law under constant mass

Yes, bodies acquire acceleration only by the action of a force. This is stated in Newton's second law of motion, which states that the acceleration of an object is directly proportional to the net force acting on it, and inversely proportional to its mass. Mathematically, the equation can be written as F = ma, where F represents the net force acting on an object, m represents the mass of the object, and a represents the resulting acceleration. This means that for an object to experience acceleration, there must be a net force acting on it. However, it is important to note that not all forces cause acceleration. For example, if an object is at rest and a person pushes it with a force equal and opposite to the force of friction acting on it, the object will not accelerate. In this case, the force of friction is balanced by the force applied by the person, resulting in zero net force and therefore, zero acceleration. In summary, bodies only acquire acceleration when there is a net force acting on them. This net force can come from various sources, including gravity, friction, or applied forces.

Yes since acceleration is directly proportional to force due to the equation F=ma => f/m=a as force increases acceleration increases. the body will only move if there is a force acting on it if resultant force is 0 then the object is in equilibrium therefore constant speed or stationary which means a=0

Your question implies that the body was originally in motion and is now being acted upon by a frictional force acting in opposition to the motion of the body. This is the direct implication of the law of inertia. The body is being propelled by the inertia it has attained, which in this case is more than the frictional force opposing it. Hence, the inertia will continue to overcome the frictional force until it fails to do so at which point the body comes to a stand still, indicating an equilibrium between both forces. So, yes, bodies do acquire an acceleration only by the action of a force.

Bodies will get acceleration by the action of the net force acting on the body under consideration. Often we ignore opposing forces acting on the body.

If a body experiences an acceleration or a change of direction of motion , it must have an outside force acting on it.

Yes, according to Newton's Second Law of Motion, an object will only experience acceleration if a force is acting upon it. The law states that the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass. Mathematically, this can be represented as F = ma, where F is the force applied to the object, m is its mass, and a is its acceleration. Therefore, in order for a body to acquire acceleration, a force must be applied to it. If no force is acting on an object, it will either remain at rest or continue to move with a constant velocity (i.e., it will not experience acceleration).

If the frictional force is less than the Resultant force body will move. For example if the frictional force is more then the body will not move. Let us take an example we are pushing a toy car in a rough surface. which means it has got frictional force. Initially it will move however frictional force is the retarding force so it would oppose motion. Aftersometime the resultant force which means the force with which the toy was sent into motion and the frictional force the opposing force , when it is nullified it would stop. So if there is single force it would acquire acceleration. But if there is multiple force and if it opposes and exactly opposite there would not be any acceleration if the net force is zero.

Accodring to Newton,Yes a body can have only accelration if a net kr unbalanced force is applied on it.Because if there is no force body will remain in its inertia state and

Hello dear student! The answer to your question is that only the frictional force on the body can not displace it because at resting point there is no frictional force acting. As of we apply external force on the body the frictional force will also be gradually increases up to some extent and the when external force exceeds the frictional force, the body starts movement. Thanks!

If the rough plane is flat or level, the object would not move if there is no external force acting on it. However, if the plane is slightly tilted, then gravitational force will naturally act on it and the acceleration would be uniform as long as there is no other force.

Any object according to Newtons second law will gain acceleration due to the net-force ( resultant force) the direction will be identified by the net force vector, the friction force causing deceleration but not stopping the object unless the magnitude equal to the applied force

It is possible if the body will be placed in a force field, like gravitation.

Yes, according to Newton's second law of motion, a body will acquire acceleration only if acted upon by a force. The law states that the acceleration of an object is directly proportional to the net force acting on it, and inversely proportional to its mass.

If you mix cold water with hot water, the resulting temperature will be lower than the initial temperature of the hot water. The rate of heat loss of the mixed water will depend on the temperature difference between the mixed water and the surrounding environment. Assuming that the initial temperature of the hot water is the same in both scenarios and the amount of cold water added is the same, the temperature of the mixed water will be the same in both cases. However, if you mix the hot and cold water from the start, the water will have a more uniform temperature throughout, which may help to reduce heat loss over time. On the other hand, if you wait an hour before adding the cold water, the hot water will have had more time to lose heat to the surrounding environment, which may make it more difficult to maintain its temperature. Therefore, it may be better to mix the hot and cold water from the start if you want to maintain the temperature for a longer period of time.

On any moving object on a plane, there are at least three forces acting at any time: Friction, the normal reaction, and the gravitational force. In your case, we have to consider two scenarios: inclined and horizontal plane. In the case of an inclined plane, If friction is high, the gravitational force, which we illustrate as weight, must be greater than the resultant of the normal force and friction so that the object moves on the rough surface. If the plane is horizontal, and constant movement is required, then a constant force greater than the force of friction must be applied to the object. I hope my answer is clear. We can discuss it further with real-life examples and testing for more in-depth understanding.

According to Newton's first law of motion, an object at rest will remain at rest and an object in motion will continue in motion with a constant velocity unless acted upon by a net external force. This means that if a body is at rest on a rough plane and there is no net external force acting on it, it will remain at rest. However, if a net external force is applied to the body, it will move. In the case of a body on a rough plane, the force that is most likely to act on it is the force of friction, which opposes the motion of the body. This means that in order for the body to move, there must be a net external force that is greater than the force of friction. For example, if a book is placed on a rough table and pushed with a small force, the force of friction between the book and the table will be greater than the force applied, and the book will not move. However, if a larger force is applied, the net external force will be greater than the force of friction, and the book will move. In summary, while the force of friction may oppose the motion of a body on a rough plane, it is still possible for the body to move if there is a net external force acting on it that is greater than the force of friction.

According to Newton's Second Law of Motion, an object will only acquire acceleration if a net force is applied to it. The relationship between force, mass, and acceleration is given by the equation F=ma, where F is the net force applied to an object, m is its mass, and a is the resulting acceleration. Therefore, it can be concluded that bodies acquire acceleration only by the action of a force. If there is no force acting on an object, then it will not accelerate.However, it is important to note that there may be situations where an object appears to be accelerating due to a force acting on it, but in reality, it may be due to other factors such as changes in direction or velocity.

Yes, any body acquires acceleration only by the action of force. It relates to the universal Laws of motion given by Sir Issac Newton. Any body continues to be in its state of rest or of uniform motion (there is no acceleration) unless compelled by a force. The term Accelerate could also mean decelerate. Frictional force, Gravitational force all have a role in accelerating or decelrating

Body will be accelerated only if the unbalanced force act in it and it's magnitude must be more than static frictional force

Newton's law states that a body at rest or in motion will stay that way unless a force acts on it. But it would be ridiculous to think that a body in motion will forever stay in motion without an external force acting to stop it. Gradually, it is bound to come to a stop and that happens because of Newton's 2nd law of motion which states that every action will have an equal and opposite reaction. If a moving body is being propelled forward by gravity then it will also experience an opposite force--friction. Now, it really depends on how much forward force is being applied to a moving body while it's on a rough plane. Just because the surface is non-smooth, does not mean that the only force in action is friction. There has to be another force, greater than friction, acting in tandem in order to keep the body moving on a rough surface. Otherwise, the body will stay at rest.

According to Newton's 2nd law of motion the force is directly proportional to acceleration hence the force is responsible for the acceleration but in case of frictional force, which is against the applied force, it will cause deceleration which is negative acceleration.

No

Yes, in accordance with Newton's second law of motion, acceleration of a body can only be produced by the action of a net force. The second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass, which can be expressed mathematically as F = ma (where F is the net force, m is the mass of the object, and a is its acceleration). Therefore, in order for a body to acquire acceleration, there must be a net force acting on it. The direction of the acceleration will be in the same direction as the net force acting on the body. If the net force acting on the body is zero, then the body will not experience any acceleration and will either remain at rest or continue to move with a constant velocity.

Very nice question you have raised, dear in this situation we will say that bodies get accelerated or decelerated when a net force act on them. In case of frictional force we will have to apply a force more than frictional force to accelerate the body.

Yes, only the application of a force may cause a body to accelerate. The acceleration of an object is exactly proportional to the net force exerted on it and inversely proportional to its mass, according to Newton's Second Law of Motion, which describes this. This may be expressed mathematically as F = ma, where F is the object's net force, m is its mass, and an is its acceleration. Therefore, a body won't accelerate on its own without the application of a force.

The body moves on rough inclined force due to the gravitational force.

Acceleration is produced when a net force acts on a body. Acceleration produced is directly proportional to the applied force and inversely proportional to the mass of the body.

According to newton's second law of motion, a body will acquire acceleration if acted upon by a force. The law stated that acceleration is directly proportional to the force applied and inversely proportional to mass.

Newton's first law of motion states that an object will remain at rest or in uniform motion in a straight line unless acted upon by a net external force. Therefore, if an object is at rest on a rough plane, it will remain at rest unless a net external force acts upon it. In the case of an object on a rough plane, the frictional force is the only force acting on the object. However, the frictional force can still cause the object to move if the force is greater than the static frictional force holding the object in place. Once the static frictional force is overcome, the object will experience kinetic frictional force, which opposes the direction of motion, but still allows the object to move.

No, acceleration is affected by other factors such as friction and gravity

Yes, according to Newton's second law of motion, a body will acquire acceleration only if acted upon by a force

A body can move on rough surface only because there must be some external force , then there will be an opposite kinetic friction .a body cannot move by itself.

A body can move on a rough plane if there is a net force acting on it. If the force applied to move the body is greater than the force of friction, which opposes the motion, then there will be a resultant force acting on the body, causing it to move from its resting position.

Hello! That's a great question. So, let's first understand what acceleration is. Acceleration is the rate at which an object's speed changes over time. If an object is moving and its speed is increasing, then it's said to be accelerating. Now, coming to your question, the answer is yes, a body acquires acceleration only when a force is acting on it. In other words, if there is no force acting on an object, it will either remain at rest or continue to move at a constant speed in a straight line. Let's take an example to understand this better. Imagine you are riding your bicycle on a flat road. If you want to increase your speed, you need to pedal harder. By doing so, you are applying a force on the pedals which in turn, applies a force on the bicycle. This force causes the bicycle to accelerate and increase its speed. Similarly, if you want to slow down or stop the bicycle, you need to apply the brakes, which also applies a force in the opposite direction of motion. This force causes the bicycle to decelerate or come to a stop. I hope that helps! If you have any more questions, feel free to ask.

Yes... A body at rest tends to stay at rest until forced to be in motion.

Yes, according to Newton's second law of motion, a body will acquire acceleration only if acted upon by a force. The law states that the acceleration of an object is directly proportional to the net force acting on it, and inversely proportional to its mass.

You are correct that according to Newton's First Law, an object at rest will remain at rest, and an object in motion will continue to move with a constant velocity, unless acted upon by an external force. In other words, a body will move from a resting position if and only if a resultant force acts on the body. Now, let's consider the example of a body moving on a rough or non-smooth surface, such as a block being pushed along a rough table. In this case, the force that is causing the block to move is not the force of friction, but rather an external force that is being applied to the block, such as someone pushing it. However, it is true that frictional forces can act against the movement of a body and make it more difficult to move. Friction is a force that resists the relative motion between two surfaces in contact, and it always acts in the direction opposite to the direction of motion or attempted motion. Therefore, in the case of the block being pushed along the rough table, the frictional force is acting against the direction of the applied force, making it more difficult to move the block. However, if the applied force is greater than the force of friction, then the resultant force will be in the direction of the applied force, and the block will move in that direction. So, while frictional forces can act against the movement of a body, they do not necessarily prevent it from moving altogether. The key is to ensure that the resultant force is in the direction of motion. :)

If a body is at rest on a rough patch of surface, then there won't be any frictional force acting on it unless you provide an external force and try to move the body relative to the rough surface. To make a body move on a rough surface you need to overcome the static friction on the body and once you overcome it, the body starts to move and kinetic friction comes into action. If the net resultant force is not equal to zero, then the object will start to accelerate in the direction of the resultant force.

This is a beautiful question.. So this is simply because friction is an unbalanced force

Yes, a body will only experience acceleration if a net force is acting onto it, according to Newton's second law of motion. According to the second law of motion, an object's acceleration is inversely proportional to its mass and directly proportional to the net force that has been applied to it. The item will remain at rest or continue to move at a constant speed (i.e., experience zero acceleration) if the net force exerted on it is zero. Therefore, the presence of a net force acting on an object is always the cause of acceleration.

Yes, a body will only experience acceleration if a net force is acting onto it, according to Newton's second law of motion. According to the second law of motion, an object's acceleration is inversely proportional to its mass and directly proportional to the net force that has been applied to it. The item will remain at rest or continue to move at a constant speed (i.e., experience zero acceleration) if the net force exerted on it is zero. Therefore, the presence of a net force acting on an object is always the cause of acceleration.

According to Newton, a body moves from a resting position if and only if a RESULTANT force acts on the body, but how is it possible for a body to move on a rough (non-smooth) plane if only the frictional force acts on the body and is against the movement, displacement?

there will no displacement,hence we don't know the direction of resultant

Bady can move on rough surface as friction force opposes the relative motion between the bodies, it doesnt always opposes the motion of the body. For example a man standing on the rough surface starts moving due to friction force only.so here friction is generating the motion of the man.it is only opposing the relative motion between man's leg and ground

A body cannot move due to friction alone, because friction is a perceived force that counteracts the force of motion. Friction happens when there is motion due to a force, like you rubbing your hand on a table or a ball rolling through mud. Only when the force is greater than friction does the body move, otherwise the molecular forces (friction) between the hand and table hold your hand there.

Yes, bodies acquire acceleration only when acted upon by a net force.

it is not only the frictional force. This depends on the slope. Then you have also gravitation acting too. So, two forces that has to be added and they provide different result depending on the slope of the plane and also the cohesion between the surfaces, i.e. the type of the body. A sphere and donut roll better than a flat surface. And if the body is a human being or even an animal, then it can be moved also by motivation, not only by force. ;-)

Fundamentally, has been proved beyond doubt that the rate of change of linear momentum of a body is proportional to the applied force, which basically defines the Newton second law of motion. Hence, since the mass of the body is constant with time, it means change in velocity with time implies acceleration and that automatically implies that the force give rise to the acceleration.

Fundamentally, the rate of change of linear momentum of a body is proportional to the applied force, which is basically the statement of Newton second law of motion. Hence, since the mass of the body is constant with time and the velocity changes with time giving rise to acceleration. It therefore automatically implies that the acceleration arises as a result of the applied force

A force is always required for a body to acquire acceleration. Note that a force is anything that can change the position or shape of an object. A push, pull or twist. Friction opposes motion and must be overcome before an object is able to move.

Second Law of Motion, which states that the acceleration of an object is directly proportional to the force acting on it and inversely proportional to its mass. Mathematically, this can be written as F = ma, where F is the force applied to an object, m is its mass, and a is its resulting acceleration.

An object would continue to remain at rest or a uniform motion except acted upon by and external force. This mean that to put the object at halt or equilibrium, the external frictional force must be equal to the force experienced by the body. Ditto a force greater than the weight of the object must be exerted on the object to make it accelerate or move from its halt state.

Newton's second law states that force is proportional to acceleration and in this case, frictional force can act a to move the body if greater than static friction.

Yes, bodies acquire acceleration only by the action of a force. This is demonstrated by the Newton's first law of motion: " A body at rest or in motion will continue in its state of rest or motion unless it is acted upon by a force".

Yes according to formula F=ma, a=F/m that means acceleration depends on force and mass so any bodies acquired acceleration only by the action of F.

Yes, only the application of a force can cause a body to accelerate. The acceleration of an object is exactly proportional to the net force applied to it and inversely proportional to its mass, according to Newton's Second Law of Motion, which describes this. F = ma, where F is the net force acting on the item, m is its mass, and an is the acceleration it experiences, is how this is mathematically described. As a result, if there is no external force acting on an item, it will remain at rest or move with constant speed. In other words, an object won't begin to accelerate on its own without any outside influence.

Yes they do

Yes, according to Newton's second law of motion, a body will acquire acceleration only if acted upon by a force.

Yes, the acceleration of a body is proportional directly to the net force acting on it and inversely to its mass. This as per Newton's 2nd law. Thus an object will acquire an acceleration upon being acted by a net force. Hence objects acquire acceleration only under the influence of a force

Yes according to newton first law of motion a body remain at rest unless a force is acting on them. if a force is acting on a body then body will accelerate according t newton second law so in both cases force is factor to accelerates the body.

No it is not possible for a body to move on a rough plane if only frictional force acts on the body because frictional force is self adjusting force. Frictional force will exist only when any external force is applied and it oppose motion. But there are two situations when body can move if only frictional force is working. First in inclined plan moreover there will be external force in the form of component of weight and second when body already moving with some velocity on rough plan but after some time it will stop due to retardation of kinetic frictional force.

Yes, bodies acquire acceleration only by the action of a force. This is known as Newton's second law of motion, which states that the acceleration of an object is directly proportional to the force acting on it and inversely proportional to its mass. Mathematically, this can be expressed as F = ma, where F is the force applied to the object, m is the mass of the object, and a is the resulting acceleration.

It is possible according to Newton's second law of motion.

Yes, it is clearly explained by Newton in his second law which states that the acceleration of an object is directly proportional to the net force acting on it, and inversely proportional to its mass.

Yes

No matter how one interprets it - we cannot discard Newton's first law. So it is not possible. But in this case there will be a negative acceleration or deceleration - because in this case the force will be acting against the motion of the object, since the object moves along a frictional path.

I try to have a simple answer for it: No, If you change the velocity of a body we will see acceleration in it, for example we push a ball to fall from a building. In this case a=9.8m/s^2. In this case gravity cause change in velocity from 0 to high value.

A body can move on a rough plane if the forces of friction acting on the body is less than the force propelling the body forward. i.e if the resultant force acting on the body is greater than zero (0), the body will experience acceleration in the direction of the resultant force. Also, the force propelling the body forward can come from different sources, including the body's internal forces such as body contractions or external forces, such as gravity or air resistance

considering the concept or the scenario depicted where only the frictional force act on the body and the body is against the movement or displacement, the only quantity that could produce the acceleration is a force in opposite direction to the frictional force. reason for the above is that the two factors that determine acceleration is either force or momentum but since there was no external force applied and is against the movement, displacement so no acceleration will be produced

According to second law of newton the net external force is equal to the multiplication of mass and acceleration that is F= m *a here we consider the mass as a constant value ( not variable mass)

While the forces are equal in magnitude and opposite in direction, the acceleration of the objects are not necessarily equal in magnitude. In accord with Newton's second law of motion, the acceleration of an object is dependent upon both forces and mass.

I want to mention two points. first, as you say the resultant force makes an acceleration for the body the same as that force direction. second, the velocity direction is always the same as the movement direction. Now if the resultant force and movement of the body is the same direction the amount of velocity is increased such as the moving from the resting position. But in the case of moving on a rough plane, there is a Resultant force as the opposite of the movement direction as a result it decreases the amount of velocity.

According to Newton's Second Law: F=ma. Force is directly propertional to mass of the body and acceleration. For example: hitting a ball, rocket launch, racing car etc. Therefore body doesn't acquire acceleration only by the action of force. Mass also plays a vital role for acceleration. Mass of body and force applied are directly proportional i.e. less mass less force and more mass more force.

Resting position here means the object is initially at rest. For the case you described, there is an initial velocity for the object, which means the object is NOT initially at rest. Another comment for the case you described: the frictional force is opposing the movement of the object, resulting in the decrease in the object's speed; if you wait long enough, the object will stop moving. To get it moving again, we need to give it a push, i.e., to apply a resultant force on it.