LAWS OF MOTION

The Laws of Motion, formulated by Sir Isaac Newton, are fundamental principles that describe the behavior of moving objects. They consist of three laws:

1. Newton’s First Law (Law of Inertia):
   • An object at rest will remain at rest, and an object in motion will continue moving with the same velocity unless acted upon by an external force.
   • This law defines the concept of inertia, which is the tendency of objects to resist changes in their state of motion.

   Example: A book on a table remains stationary until a force (like a push) moves it.

2. Newton’s Second Law (Law of Acceleration):
   • The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
   • Mathematically, it is represented as $=ma$, where F is the force applied, $m$ is the mass of the object, and $a$ is the acceleration.

   Example: Pushing a lighter object requires less force to achieve the same acceleration compared to a heavier object.

3. Newton’s Third Law (Action and Reaction):
   • For every action, there is an equal and opposite reaction.
   • This means that whenever an object exerts a force on another object, the second object exerts an equal force in the opposite direction.

   Example: When you jump off a boat, the boat moves in the opposite direction due to the force exerted by your legs pushing on it.

These laws are essential for understanding motion, forces, and the behavior of objects in mechanics.