Question

A particle starts from rest and undergoes an acceleration as shown in figure. The velocity-time graph from figure will have a shape

• A. diagram
• B. diagram
• C. diagram
• D. diagram

Answer 1

The correct option is D diagram

According to the given graph acceleration is constant $i.e.,am/s^2)$ till $t=2s$, and after that there is constant deceleration $-am/s^2$

So, velocity increases for $t=2s$ from 0 to maximum, then decreases and finally becomes zero in next $2s$.

Therefore, correct representation of velocity with time is according to (a).

Final answer: (a)