Question

Whena body is said to be in motion..

Answer 1

Heya Mate

A body is said to be in motion if it change its position with respect to time surrounding or stationary object

however it is believed by the great scientist of the earth that none of the object is in motion or rest

Answer 2

when a body is said to be in motion when it's position is continuously with respect to a stationary object taken as reference point.