Which of the following is correct when a pers | vedclass

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(C) According to Newton's $3^{rd}$ law of motion,when a person walks,they push the ground backward with their foot. In response,the ground exerts an e

Vedclass · Accepted Answer

The reaction of the force which the man exerts on the floor keeps him moving.

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(C) According to Newton's $3^{rd}$ law of motion,when a person walks,they push the ground backward with their foot. In response,the ground exerts an equal and opposite reaction force on the person. The vertical component of this reaction force balances the person's weight,preventing vertical motion. The horizontal component of this reaction force (which is the static friction force) acts in the forward direction and pushes the person forward. Therefore,the reaction force exerted by the floor on the person is responsible for their forward motion. Hence,option $C$ is correct.

Which of the following is correct when a person walks on a rough surface?

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