Answer:
(a) False. The net acceleration of a particle in circular motion is towards the centre only if its speed is constant.
(b) True. A particle released at any point of its path will always move along the tangent to the path at that point.
(c) True. For any two diametrically opposite points on the circumference, the acceleration vectors are equal and opposite. Hence the acceleration vector averaged over one complete cycle is a null vector.
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