Question

What is inertia ? Class 9​

Answer 1

body at rest want stay at rest

Answer 2

Inertia- Inertia is the inability of a body to change its state of rest or state of motion or state of direction by itself.

Extra Information

=> Inertia is of three types

(i) Inertia of rest

(ii) Inertia of motion

(iii) Inertia of direction

=> Mass is the measure of inertia and inertia is directly proportional to mass.

$Inertia \: \infty \: \: Mass$

=> Newton's first law of motion is also known as law of inertia because in it force and change state of rest or motion.