You hit a tennis ball over the net. When the ball reaches its maximum height, its speed is
A) equal to its initial speed.
B) less than its initial speed.
C) g*t.
D) greater than its initial speed.
E) zero.

Question

Quizplus · Accepted Answer

At its maximum height, the vertical component of the tennis ball's velocity is zero because it momentarily stops moving upward before it starts to fall back down. However, if there's any horizontal motion, it's not accounted for in this context. The ball's speed is less than its initial speed because it has been decelerated by gravity.

You Hit a Tennis Ball Over the Net