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A particle starting from rest has a cons...

A particle starting from rest has a constant acceleration of `4 m//s^2` for 4 s. It then retards uniformly for next 8 s and comes to rest. Find during the motion of particle (a) average acceleration (b) average speed and (c) average velocity.

A

`4 m//s^2`

B

zero

C

`8 m//s^2`

D

`- 4 m//s^2`

Text Solution

Verified by Experts

The correct Answer is:
B
Average acceleration is zero, because change in velocity is zero.
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