Consider the following statements A and B and | vedclass

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(D) Statement $A$ is incorrect. When a person walks, they push the ground backward with their foot. According to Newton's third law, the ground exerts

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$A$ is wrong, $B$ is correct

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(D) Statement $A$ is incorrect. When a person walks, they push the ground backward with their foot. According to Newton's third law, the ground exerts an equal and opposite force on the person in the forward direction. Thus, the frictional force acts in the direction of motion.Statement $B$ is correct. For a cycle, the rear wheel is driven by the chain, so the ground exerts a forward frictional force on it. However, the front wheel is a rolling wheel that is not driven; it experiences a backward frictional force from the ground to oppose its rotation and motion.

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