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# When a person walks on a rough surface, the frictional force exerted by the surface on the person is opposite to the direction of his motion.A. TrueB. False

Last updated date: 02nd Aug 2024
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Hint: Think of all the forces acting on the man while he is moving. Now recall the definition of frictional force. We know that it opposes the relative motion, so, in order for it to oppose the relative motion between the man and the rough surface, which direction should the force act.

In the question, we are given a person who walks on a rough surface. When this person walks, there exists frictional force acting on the person exerted by the surface. We are given a statement that the direction of this frictional force is opposite to the direction of man’s motion. We are asked to find whether the given statement is true or false.
To answer this question, let us recall what frictional force actually is. It is that force that resists the relative motion of two surfaces of an object in contact. So in order to oppose the motion of an object, the frictional force should obviously be acting in the opposite direction to the motion of the motion. Therefore, the given statement, ‘When a person walks on a rough surface, the frictional force exerted by the surface on the person is opposite to the direction of his motion’ is true.

So, the correct answer is “Option A”.