A basketball player is holding a ball in her hands at a height of 1.5 m above the ground. She drops the ball, and it bounces several times. After the first bounce, the ball only returns to a height of 0.75 m. After the second bounce, the ball only returns to a height of 0.25 m. a. Suppose downward is the positive direction. What would the shape of a velocity-time graph look like for the first two bounces? b. What would be the shape of a position-time graph for the first two bounces?