Question

define motion.................​

Answer 1

A body is said to be in a state of rest w.r.t. a stationary body if its position does not change with time as seen by the stationary body. Similarly, it is in the state of motion w.r.t a stationary body if its position changes with time as seen by the stationary body.   

Answer 2

Answer:

Motion: A body is said to be in motion or moving when its position changes continuously with respect to a stationary object taken as reference point.