When a carpet is beaten with a stick, dust comes out. Why does this happen?
First law of motion
The 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 it comes in motion. But, the dust particles try to resist a change in their state of rest. According to newton first law of motion, the dust particles stay in a state of rest, while the carpet moves. Hence, the dust particles come out of carpet.