A person is attracted toward the center of the Earth by a 500-N gravitational force. The Earth is attracted toward the person with a force of
A) 1000 N.
B) zero.
C) 250 N.
D) 500 N.

Question

Quizplus · Accepted Answer

According to Newton's third law of motion, for every action, there is an equal and opposite reaction. Therefore, if the Earth exerts a 500-N force on the person, the person exerts a 500-N force on the Earth as well.

A Person Is Attracted Toward the Center of the Earth