NEWTON's FIRST LAW OF MOTION-தமிழ்

 NEWTON's FIRST LAW OF MOTION-தமிழ்

 NEWTON's FIRST LAW OF MOTION:

Every body maintains its initial state of rest or motion with uniform speed on a straight line unless an external force act on it.

*NEWTON's FIRST LAW OF MOTION give the introduction & explanation of inertia and momentum and give only the definition of force that is it.

*First law is known as Law of Galileo or Law of Inertia.

Inertia :

There are two type of inertia.They are:

1.Inertia at rest

2.Inertia of Motion

Inertia at rest

Inertia of Motion

Momentum

It is the measure of amount / quantity of motion contained in body.It is vector quantity

Momentum=mass X velocity

FORCE:

It is that external cause which when acts on a body change or tries to change the initial state of rest or motion with uniform velocity of the body.