Question

when a carpet is beaten with a stick ,dust comes out of it.Explain

Answer 1

Inertia of an object tends to resist any change in its state of rest or state of motion. When a carpet is beaten with a stick, then the carpet comes to motion. But, the dust particles try to resist their state of rest. According to Newton’s first law of motion, the dust particles stay in a state of rest, while the carpet moves. Hence, the dust particles come out of the carpet.

Answer 2

It's because of newton first law of motion (inertia).
Let me explain first law of inertia .the statement is "When the body is in stationery or in motion wants to remain as it is unless and until external force apply."
So according to first law When the carpet is beaten with stick,dust on carpet want to stay in their position while carpet moves down due to force of stick which cause dust to move out from the carpet.
hope it will help you ☺️