My Dashboard

Lesson: Newton’s Third Law of Motion

In this lesson, we will learn how to solve problems on Newton's third law, which states that for every action, there is a reaction equal in magnitude and opposite in direction.

Worksheet: Newton’s Third Law of Motion • 21 Questions

Q1:

An elevator is accelerating vertically upwards at . A man of mass is standing inside. Determine the reaction force of the floor on the man.

A
1 537.6
N
B
1 215.2
N
C 892.8 N
D 322.4 N

Q2:

An elevator was accelerating vertically downwards at 1.7 m/s². Given that the acceleration due to gravity is , find the reaction force of the floor to a passenger of mass 103 kg.

A 834.3 N
B
1 009.4
N
C
1 184.5
N
D 175.1 N

Preview