N-1: Law of Inertia
An object at rest stays at rest and an object in motion stays in motion, unless acted on by an outside force.
N-2: Law of Force
The acceleration of an object is dependent upon the net force acting on the object and the mass of the object.
Force = mass x acceleration
N-3: Law of Action & Reaction
For every action there is an equal and opposite reaction.
Forces occur in pairs.