define the term motion and explain what is meant by saying that all motion is relative.
Explain the statement all motion is relative? Motion is relative because it is gauged by the position of the evaluating body. For example, two jet aircraft in formation are moving at the same speed of hundreds of mile â¦ s per hour , This speed is from the vantage point of a stationary ground observer.
Motion (physics) In physics, motion is a change in position of an object over time. Motion is described in terms of displacement, distance, velocity, acceleration, time and speed. Motion of a body is observed by attaching a frame of reference to an observer and measuring the change in position of the body relative to that frame. If the position of a body is not changing with respect to a given frame of reference, the body is said to be at rest, motionless, immobile, stationary, or to have constant (time-invariant) position.