You hold a 5- newton rock motionless in your hand. Regarding the forces on this rock,
A) there are no forces of any kind acting on the rock, because it is not moving.
B) the downward force of gravity is balanced by the upward force of air resistance.
C) the net force on the rock is 5 newtons, directed upward.
D) the net force on the rock is 5 newtons, directed downward.
E) the net force on the rock is zero.

Question

Quizplus · Accepted Answer

The rock is motionless, indicating that the forces acting on it are balanced. The upward force from your hand equals the downward gravitational force, resulting in a net force of zero.

You Hold a 5- Newton Rock Motionless in Your Hand