Newton's three laws of motion

number 1. States that an object at rest will remain at rest, and an object moving at a constant velocity will continue moving at a constant velocity, unless it is acted upon by an unbalanced force.

"Also called - the law of inertia"

number 2. acceleration depends on the object's mass and on the net force acting on the object.

number 3. States that if one object exerts a force on another object, then the second object exerts a force of equal strength in the opposite direction on the first object.

"for every action there is an equal but opposite reaction"

The third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal force on object A. Notice that the forces are exerted on different objects.