A car is moving in high speed during a championship, with respect to the ground the position is changing according to time hence the car is in relative motion
In physics, motion is when an object changes its position with respect to a reference point in a given time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and frame of reference to an observer, measuring the change in position of the body relative to that frame with a change in time. The branch of physics describing the motion of objects without reference to their cause is called kinematics, while the branch studying forces and their effect on motion is called dynamics.
If an object is not in motion relative to a given frame of reference, it is said to be at rest, motionless, immobile, stationary, or to have a constant or time-invariant position with reference to its surroundings. Modern physics holds that, as there is no absolute frame of reference, Newton's concept of absolute motion cannot be determined.[1] As such, everything in the universe can be considered to be in motion.[2]: 20–21
Motion applies to various physical systems: objects, bodies, matter particles, matter fields, radiation, radiation fields, radiation particles, curvature, and space-time. One can also speak of the motion of images, shapes, and boundaries. In general, the term motion signifies a continuous change in the position or configuration of a physical system in space. For example, one can talk about the motion of a wave or the motion of a quantum particle, where the configuration consists of the probabilities of the wave or particle occupying specific positions.
^Wahlin, Lars (1997). "9.1 Relative and absolute motion" (PDF). The Deadbeat Universe. Boulder, CO: Coultron Research. pp. 121–129. ISBN 978-0-933407-03-9. Archived (PDF) from the original on 2016-03-04. Retrieved 25 January 2013.
^Tyson, Neil de Grasse; Charles Tsun-Chu Liu; Robert Irion (2000). One Universe : at home in the cosmos. Washington, DC: National Academy Press. ISBN 978-0-309-06488-0.
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