Newton's laws of motion are three fundamental principles that describe the
relationship between the motion of an object and the forces acting on it:
Newton's First Law (Law of Inertia)
An object at rest remains at rest, and an object in motion continues to move
at a constant velocity in a straight line unless acted upon by an unbalanced
external force. This means objects resist changes to their state of motion, a
property called inertia
. Newton's Second Law (Law of Acceleration)
The acceleration of an object depends directly on the net force acting on it
and inversely on its mass. Mathematically, this is expressed as F=maF=maF=ma,
where FFF is the net force, mmm is the mass, and aaa is the acceleration. This
law quantifies how forces change the motion of objects
. Newton's Third Law (Action and Reaction)
For every action, there is an equal and opposite reaction. When one object
exerts a force on another, the second object exerts a force of equal magnitude
but in the opposite direction on the first object
. These three laws form the foundation of classical mechanics and explain a wide range of physical phenomena involving motion and forces.
