## Encyclopedia > Motion

Article Content

# Motion

In the law, a motion is a procedural device to bring a limited but contested matter before a court for decision.

In physics, motion means a change in the position of a body with respect to time, as measured by a particular observer in a particular frame of reference. Only relative motion can be measured; absolute motion is meaningless. See also equation of motion, Newton's laws of motion.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia
 Search over one million articles, find something about almost anything!

Featured Article
 Quadratic formula ... also called the roots of the equation. The formula reads $x=\frac{-b \pm \sqrt {b^2-4ac}}{2a}$ The term b2 – 4ac is called the ...