What are the three laws of Newton? Does he have other laws also.

Newton's role in describing the motion of an object is
primarily attributed to what are called Newton's three laws of motion which
are:

• Newton's First law of
  motion:

Every object in a state of uniform
motion tends to remain in that state of motion unless an external force is applied to
it.

• Newton's Second Law of
  motion:

The relationship between an object's
mass m, its acceleration a, and the applied force
F is F = ma. Acceleration and force are
vectors (as indicated by their symbols being displayed in slant bold font); in this law
the direction of the force vector is the same as the direction of the acceleration
vector.

• Newton's Third Law of
  motion:

For every action there is an equal and
opposite reaction.

In addition to these, as Isaac Newton
was a great Mathematician, Astronomer and Physicist, there are many other areas in which
he has worked. There is no Newton's Fourth Law of Motion but his works in other areas
have helped science and mathematics greatly.