1. The problem statement, all variables and given/known data Q-Figure shows the acceleration-time graph of a particle moving along a straight line.After what time the particle acquires its initial velocity?The graph is attached. 2. Relevant equations We know that change in velocity is equal to the area covered by an acceleration-time graph. ie (v-u)=at 3. The attempt at a solution My logic is that the total change in velocity in 2 sec is 3 because (2+1/2*1*2). So,if again initial velocity is to be reached,then the total change in velocity in negative direction should be 3.However,how should i calculate the time taken?