2. Forces and Newton’s Laws

Newton’s Third Law — Quiz

Test your understanding of newton’s third law with 5 practice questions.

Practice Questions

Question 1

A 3 kg object is at rest on a frictionless surface. A person applies a horizontal force of 15 N to the right. According to Newton’s Third Law, what is the force that the object applies back on the person?

Question 2

A 10 kg block is pushed against a wall with a force of 50 N. The block does not move. According to Newton’s Third Law, what is the reaction force to the 50 N push?

Question 3

A 5 kg object is pulled upward by a rope with a force of 60 N. What is the reaction force to the rope’s pull on the object?

Question 4

A 2 kg ball is dropped from rest and falls under gravity. Ignoring air resistance, what is the reaction force to the gravitational force acting on the ball?

Question 5

A 12 kg box is pushed along a frictionless floor with a force of 36 N to the right. According to Newton’s Third Law, what is the reaction force?