Two particles A and B start from the same point and move in the positive x-direction. Their velocity-time graphs are shown. What is the maximum separation between them during the shown interval?

Question

G1 Physics · Accepted Answer

Separation equals the area between the two v-t graphs. It is maximum when the relative velocity becomes zero, i.e. where the graphs cross. The area between them up to that instant is 1.25 m. Hence option B.