Question

Motion is the change of location or position of an object with time relative to an observer.

• A. True
• B. False

Answer 1

The correct option is A

True

Motion cannot be measured independently, it is relative to an observer. So if a body is changing its position and location with time with respect to the observer, then it is said to be in motion.

For example, the door of a moving train is in motion with respect to an observer standing on the ground. But, it is at rest with respect to a passenger sitting in the moving train.