Assertion (A): The speed of a body in uniform | vedclass

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(C) $(i)$ Assertion is correct: In uniform circular motion,a body moves with constant speed. It is the magnitude of velocity that remains constant.$(i

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$(A)$ is true but $(R)$ is false.

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(C) $(i)$ Assertion is correct: In uniform circular motion,a body moves with constant speed. It is the magnitude of velocity that remains constant.$(ii)$ Reason is incorrect: In uniform circular motion,the acceleration is centripetal acceleration,which is directed towards the center of the circular path. Since the direction of the particle changes at every point,the direction of the centripetal acceleration also changes continuously. Because acceleration is a vector quantity,a change in direction implies that the acceleration is not constant.

Assertion $(A)$: The speed of a body in uniform circular motion is constant.
Reason $(R)$: In uniform circular motion,the acceleration of the body is constant.

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Assertion $(A)$: The speed of a body in uniform circular motion is constant.Reason $(R)$: In uniform circular motion,the acceleration of the body is constant.