Question

’Reference point is necessary to describe a motion’ .explain

Answer 1

A reference point is important in determining motion because in order to say that something is moving, you need to have something stationary to compare it to. You can then define the velocity of a particle as the rate of change of the displacement of the particle from the reference point.

Answer 2

A reference point is a place or object used for comparison to determine if something is in motion. An object is in motion if it changes position relative to a reference point. Objects that we call stationary—such as a tree, a sign, or a building—make good reference points.