Question

What is the average value of acceleration vector in uniform circular motion?

Answer 1

Acceleration means the rate of change of velocity, or the change in velocity divided by the time take for the change to happen.

Average acceleration means the the net change in velocity over the period of time.

In case of uniform circular motion, in one complete revolution, the final velocity will become the same as initial velocity, right? Yes.

So, according to the definition the average acceleration would be zero as there is no change in velocity.

Answer 2

The answer is 0 because there is no velocity so acceleration is not change