A tennis ball is shot vertically upward in an evacuated chamber inside a tower with an initial speed of 20.0 m/s at time t = 0 s.
-What is the magnitude of the acceleration of the ball when it is at its highest point?

Question

Quizplus · Accepted Answer

In an evacuated chamber, the only force acting on the ball is gravity, so the acceleration is equal to the acceleration due to gravity, which is 9.80 m/s², even at the highest point.

A Tennis Ball Is Shot Vertically Upward in an Evacuated