Question

Defrance in rest and motion

Answer 1

1)when the body is not moving then it is considered to be at rest...and when the body is moving it is considered to be in motion..or if the position of a body is changing with respect to it's surrounding ,then it is said to be in motion.Otherwise it is at rest.
2)when the body is in rest position,no exernal force is acting upon it..... but we have to apply an external force on it to take it in motion.

Answer 2

Rest means being not in motion.
And motion means having some velocity or speed
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