Sorry, I need more information on what kind of motion you are referring to. Here are some possible meanings of the word “motion”:

* In physics, motion is the change in position of an object with respect to time.
* In mathematics, motion can refer to a transformation of a geometric object.
* In computer science, motion can refer to the movement of a cursor or other graphical object on a screen.
* In biology, motion can refer to the movement of an organism or cell.
* In psychology, motion can refer to the perception of movement.

Can you please specify which definition of motion you are looking for?