[Solved] If a body moves with a constant speed in a circle –

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Q.	If a body moves with a constant speed in a circle –
A.	no work is done on it
B.	no force acts on it
C.	no acceleration is produced in it
D.	its velocity remains constant
Answer» D. its velocity remains constant
Explanation: A body moving with a constant speed in a circle is an example of uniform circular motion. The velocity vector is constant in magnitude but changing in direction. Since velocity is a vector quantity that has both magnitude and direction, a change in either the magnitude or the direction constitutes a change in the velocity which leads to change in acceleration.

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