Practice question
Question
A particle moves in a circle of radius 3m with a speed of 12m/s. What is its centripetal acceleration?
Explanation
Centripetal acceleration ac=v2R. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives 48 m/s² as the result, so option D is correct.
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