• question_answer The acceleration of a particle varies with time, as shown in figure, If the particle start moving from rest, the velocity of particle after 3s is: A)  zero                B)  $2m/s$C)  $3m/s$                      D)  $4m/s$

V = area under the curve $=\frac{1}{2}\times 2\times 4-\frac{1}{2}\times 2\times 1=3m/s$