when a person walks on a rough road a frictional force exerted by the road on the person is opposite to the direction of is motion? comment
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The frictional force exerted by ground on the person is in the direction of his movement .
Why is it so ? If you take the person as a body, there has to be an external force to propel him/her in the direction of motion. The only external force is the frictional force .
How does this force originate ? The person while trying to walk tries to push the ground behind him and by newton's third law, he is pushed by ground
When a person is trying to move, the direction of motion of the particles on his feet is in the backward direction. Frictional force is in such a direction as to oppose relative motion between two bodies at the point of contact. Hence in this case, frictional force will be in the direction of motion
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♦When a person walks on a rough road a frictional force exerted by the road on the person is opposite to the direction of its motion
↪The statement is wrong
♦When a person walks he pushes the ground/ Road backwards with his feet and force of friction acts in the forward direction means in the direction of his motion .
_______________________
✌
_______________________
♦When a person walks on a rough road a frictional force exerted by the road on the person is opposite to the direction of its motion
↪The statement is wrong
♦When a person walks he pushes the ground/ Road backwards with his feet and force of friction acts in the forward direction means in the direction of his motion .
_______________________
✌
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