A ball thrown into the air follows a parabolic trajectory. At the highest point in the trajectory
A) both the velocity and the acceleration are zero.
B) the velocity is zero, but the acceleration is not zero.
C) neither the acceleration nor the velocity are zero.
D) the acceleration is zero but the velocity is not zero.

Question

Quizplus · Accepted Answer

At the highest point, the vertical component of velocity is zero, but the horizontal component is not. The acceleration due to gravity is always acting downwards, so it is not zero.

A Ball Thrown into the Air Follows a Parabolic Trajectory