Inertia is the resistance of any physical object to a change in its state of motion. It is represented numerically by an object's mass.
The principle of inertia is one of the fundamental principles of classical physics which are used to describe the motion of matter and how it is affected by applied forces.
Inertia is proportional to mass. Big masses resist changing their motion more than smaller masses.
An object’s inertia causes it to continue moving the way it is moving unless it is acted upon by an (unbalanced) force to change its motion. An unbalanced force is a net force.
Use of Inertia in real Life..
-Drivers wearing seatbelts for safety when driving to prevent
themselves from falling when braking
-Apple falling from a tree when tree is shaken
-Elephant being unable to move in a zig-zag manner due to its