Newton's first law states that if a body is at rest or moving at a
constant speed in a straight line, it will remain at rest or keep
moving in a straight line at constant speed unless it is acted upon by
a force.

Newton's second law of motion can be formally stated as follows:

The acceleration of an object as produced by a net force is directly
proportional to the magnitude of the net force, in the same direction
as the net force, and inversely proportional to the mass of the
object.

Formally stated, Newton's third law is:

For every action, there is an equal and opposite reaction.