Question

The acceleration -time graph of a particle moving in a straight line is as shown in figure. The velocity of the particle at time t=0 in a m/s. The velocity after 2 seconds will be

• A. $6m/s$
• B. $4m/s$
• C. $2m/s$
• D. $8m/s$

Answer 1

Answer: (B)

$4m/s$

The velocity after 2 seconds will be the area under the curve of the Acceleration-time graph.

Area at $2s=\frac{1}{2}\times h\times b=\frac{1}{2}\times 4\times 2=4m/s.$