Derive the graph for velocity vs. time from the distance vs. time graph.

The upper graph represents the motion of a bouncing ball, distance vs. time. The distance is measured from the ground up. When the ball moves upwards, the velocity is positive. [br]Move the points M, N, O, P, Q, R so that the segments DM, NO, and PQ represent the velocity of the ball in the air.

Move the points M, N, O, P, Q, R so that the segments DM, NO, and PQ represent the velocity of the ball in the air.