Question

What is meant by body at rest and body at motion?

Answer 1

Motion:-A body is said be in a state of motion if it changes its position continuously with respect to its surroundings with the passage of time.
E.g A bus running on a road, a flying bird etc

Rest:- A body is said to be at rest if it does not changes its position continuously with respect to its surroundings with the passage of time.
Eg A book lying on a table