A stone is thrown vertically upward.At the top of its vertical path the force acting on it is
A)zero.
B)only the force due to gravity.
C)due to air resistance.
D)both due to gravity and air resistance.

Question

Quizplus · Accepted Answer

At the top of the stone's vertical path, the stone comes to a momentary stop before it starts to fall back to the ground. At that point, the only force acting on the stone is the force due to gravity, since air resistance would only be present while the stone is moving through the air. Therefore, the correct choice is B, only the force due to gravity.

A Stone Is Thrown Vertically Upward