An astronaut stands at a position on the Moon such that Earth is directly over head and releases a Moon rock that was in her hand.
What is the gravitational force exerted by the Earth on the same 2.8-kg rock resting on the surface of the Moon?
What is the net gravitational force on the rock?
What is the gravitational force exerted by the Earth on the same 2.8-kg rock resting on the surface of the Moon?
What is the net gravitational force on the rock?