3.1. Newton’s laws of motion

Question 1

First law

Answer 1

If a body is at rest it remains at rest or if it is in
motion it moves with a uniform velocity until it is acted on
by resultant force or torque

Question 2

Second law

Answer 2

The rate of change of momentum of a body is proportional to the resultant force and occurs in the direction of force; F=ma

Question 3

Third law

Answer 3

If a body A exerts a force on a body B, then
body B exerts an equal but opposite force on body A,
forming an action-reaction pair