Question

Please answer question number 8 immediately.plzzzz plzzzz .the answer is option D . But I need correct stepwise explanation. Plzz anybody plzz help

Answer 1

Answer:

Slope of the velocity and time graph , always provide us the acceleration.

According to the above acceleration for OA is equal to the

Slope of OA= (10-0)/(10-0)

So acceleration for OA =1 m/sec^2.

Acceleration for AB =0 m/sec^2

For BC ,Slope =(0-10)/(40-20)

=-0.5m/sec^2