A ball is thrown with some initial velocity at an angle of 42° relative to the horizontal. When the ball reaches its maximum height
A) its acceleration is zero.
B) its velocity is zero.
C) its acceleration is nonzero.
D) its velocity is at maximum value.

Question

Quizplus · Accepted Answer

At the maximum height, the vertical component of the velocity is zero, but the acceleration due to gravity (approximately 9.8 m/s^2 downward) still acts on the ball, making its acceleration nonzero.

A Ball Is Thrown with Some Initial Velocity at an Angle