A baseball catcher throws a ball vertically upward and catches it in the same spot when it returns to his mitt.At what point in the ball's path does it experience zero velocity and non-zero acceleration at the same time?
A)midway on the way up
B)at the top of its trajectory
C)the instant it leaves the catcher's hand
D)the instant before it arrives in the catcher's mitt

Question

Quizplus · Accepted Answer

When the ball reaches the highest point of its trajectory, it comes to a stop and momentarily changes direction. At this point, the ball experiences zero velocity since it stops moving upwards and begins to move downwards. However, it still experiences non-zero acceleration, which is equal to the acceleration due to gravity pulling it downwards. Therefore, the point at which the ball experiences zero velocity and non-zero acceleration at the same time is at the top of its trajectory.

A Baseball Catcher Throws a Ball Vertically Upward and Catches