Physics - Motion - Class - 7 - Selina Solution - ICSE.

 2. Comment on the statement 'rest and motion are relative terms'. Give an example.

         Rest and motion are the relative terms because they depend on the observer's frame of reference. If an observer is at rest in his or her own frame of reference, but he may be moving in other observer's frame of reference.

For example - when a person travels by a car a person who is outside the car sees the person inside the car in motion. But the person inside the car feels himself to be at rest with car as the frame of reference.