Question

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

• 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

Answer 1

The correct option is D

A null vector

In complete revolution change in velocity becomes zero so average acceleration will be zero.