Question

why do dust particles fall down when a door mat is lifted​

Answer 1

Answer:

because the mat when lifted comes in motion with respect to inertia of motion and on the other hand the dust particles remain in the state of rest due to inertia of rest.Thus , they fall down under the gravity.

Hope this is helpful

Answer 2

Explanation:

due to inertia of rest

The dust particles tends to be in rest when the door mat is lifted and hence gets seperated from the door mat

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