A) A constant vector of magnitude \[\frac{{{v}^{2}}}{r}\]
B) A vector of magnitude \[\frac{{{v}^{2}}}{r}\] directed normal to the plane of the given uniform circular motion
C) Equal to the instantaneous acceleration vector at the start of the motion
D) A null vector
Correct Answer: D
Solution :
In complete revolution change in velocity becomes zero so average acceleration will be zero.
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