Question

What is meant by a body at rest?

Answer 1

Hey MATE!

When an object is not moving and not showing any movement in relative to any frame of reference then we say that the body is at rest.

Hope it helps #))

Answer 2

An object at rest will remain atrest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This law is often called. "the law of inertia".
hope it helps ☺☺