Newton's First Law
In an inertial frame of reference, if no force is acted upon an object, said object will remain at rest or move at a constant velocity.
Newton's Second Law
In an inertial frame of reference, the sum of the Forces (F) acting on an object is equal to the mass (m) of the object multiplied by the acceleration (a) of the object.
$ F = ma $
Newton's Third Law
When a force is acted on an object, the object will exert a force of equal magnitude and opposite direction.