A ball is thrown downward in the absence of air.After it has been released,which statement(s)concerning its acceleration is correct? (There could be more than one correct choice.)
A)Its acceleration is constantly increasing.
B)Its acceleration is constant.
C)Its acceleration is constantly decreasing.
D)Its acceleration is zero.
E)Its acceleration is greater than g.

Question

Quizplus · Accepted Answer

In the absence of air, the only force acting on the ball is gravity. Since the gravitational force on the ball is constant, its acceleration is also constant and equal to g, which is approximately 9.8 m/s^2. Therefore, statement B is correct, while statements A, C, D, and E are incorrect.

A Ball Is Thrown Downward in the Absence of Air