A rock is thrown vertically into the air. At the top of its path, its acceleration in meters per second per second is
A) zero.
B) greater than 9.8.
C) between 0 and 9.8.
D) 9.8.

Question

Quizplus · Accepted Answer

At the top of its path, a rock thrown vertically still experiences the acceleration due to gravity, which is approximately 9.8 meters per second squared downwards, even though its velocity is momentarily zero.

A Rock Is Thrown Vertically into the Air