1. Newton's First Law of Motion (Law of Inertia):
An object at rest will remain at rest, and an object in motion will continue moving at a constant velocity unless acted upon by an external force.
Formula: F = 0 (Force acting on the object is zero when it is at rest or moving with a constant velocity)
2. Newton's Second Law of Motion (Law of Acceleration):
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
Formula: F = ma (Force = mass × acceleration)
Newton's Second Law of Motion states that the net force acting on an object is directly proportional to the rate of change of its momentum with time. In simpler terms, it describes how an object's motion changes when an external force is applied to it.
Mathematically, the Second Law can be expressed as:
F = ma
where:
- F is the net force acting on the object (measured in Newtons, N),
- m is the mass of the object (measured in kilograms, kg), and
- a is the acceleration of the object (measured in meters per second squared, m/s²).
This means that when a force is applied to an object, it will experience an acceleration directly proportional to the force and inversely proportional to its mass. The
3. Newton's Third Law of Motion (Action-Reaction Law):
For every action, there is an equal and opposite reaction. When one object exerts a force on another, the second object exerts an equal and opposite force on the first.
Forces always occur in pairs. Force on a body A by B is equal and opposite to the force on the body B by A.
Formula: F₁ = -F₂ (Force exerted by object 1 on object 2 is equal in magnitude but opposite in direction to the force exerted by object 2 on object 1)
