Question

A body can be at rest and in motion at the same time.

• A. True
• B. False

Answer 1

The correct option is A True

Step1: Definition of motion:

Motion is the process of moving, changing place, or even changing position with respect to its surroundings in a given interval of time.

Step2: Definition of Rest:

One object is said to be at rest If the position of that object doesn't change with respect to time.

1. Rest and motion are relative terms.
2. The motion and rest of the object are relative to either frame of reference of the observer, or to another frame of reference.
3. So, If one observer is at rest in his own frame of reference, but he may be moving in another observer's frame of reference.

Step3: Example

Consider a person sitting on a moving train.

That person is at rest with respect to the train, But he is in motion with respect to the person standing on a platform.

so, a body at rest with respect to one observer may be in motion with respect to another observer.

Hence, a body can be at rest and in motion at the same time.