The average acceleration vector for a particle having a uniform circular motion is

Options

A. a constant vector of magnitude `v^(2)//r`
B. a vector of magnitude`v^(2)//r` directed normal to the plane
C. equal to the instantaneous acceleration vector at the start of the motion
D. a null vector

Answer

D

Explanation

In complete revolution change in velocity becomes zero. Hence, average acceleration is zero .