Question

If we kick a piece of paper placed under the book quickly, the paper moves without the movement of book. Why?

Answer 1

the book has developed the property of inertia of rest so when the paper is moved the book remains in its place

Answer 2

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Initially, both the piece of paper and the pile of books are in a state of rest.

When the piece of paper placed under a pile of books is suddenly pulled it is set into motion, while the pile of books remain in the state of rest due to inertia of rest.

Thus, the pile of books does not move.

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