Question

define what is condition of motion ? with example

Answer 1

motion is a simple thing ,when we change our position or move from one place that is known as motion.
ex- if a car moves from rest so it is in motion

Answer 2

The condition here is that the resulting external force acting on the body is constant and non-zero. Force plays a major role in any type of motion of any object.Thus Force is required to bring the object in motion or at rest According to the Newton's Law's of motion
Ex-a person sitting on a train and a person watching from outside.