Question

what is rest mass, define clearly and conceptually ?

Answer 1

Mass is a property of a physical body. It is a measure of an object resistance to acceleration when a force is applied and the mass of a body when at rest, then is is called rest mass.

Answer 2

Explanation:

Hlw sir....

HERE IS YOUR CORRECT ANSWER :

Rest mass can be defined as the mass it is possessed when it is at rest relative to the observer's reference frame.

OR

IT IS ALSO DEFINED AS

The mass of the body as measured when the body is at rest, but it is relative to an observer who is moving or not, an inherent property of the body. All matter ,such as any object has some rest mass....

I HOPE IT HELPS U A LOT....

PLZZ MARK ME AS BRAINLIST SIR......

TQ....