Question

examples of first law of motion

Answer 1

suppose a book is lying on the table .it is at rest .the book will not move by itself that is ,it cannot change its position of rest by itself.it can chage its state of rest only when complled by the force of our hands ,that is when we lift the book from the table. thus the position of rest of the book has been changed by the external force of our hand.
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Answer 2

A ball is on rest, it will be on rest until or unless any external force is applied on it..
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