what is motion ..............
Answers
In physics, motion is the phenomenon in which a object changes it's position over time . Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time.
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Answer:
the position of an object is not changing relatively to a given frame of reference, the object is said to be at rest, motionless, immobile, stationary, or to have a constant or time-invariant position with reference to its surroundings. As there is no absolute frame of reference, absolute motion cannot be determined. Thus, everything in the universe can be considered to be in motion.:20–21
Motion applies to various physical systems: to objects, bodies, matter particles, matter fields, radiation, radiation fields, radiation particles, curvature and space-time. One can also speak of motion of images, shapes and boundaries. So, the term motion, in general, signifies a continuous change in the positions or configuration of a physical system in space. For example, one can talk about motion of a wave or about motion of a quantum particle, where the configuration consists of probabilities of occupying specific positions.
The main quantity that measures the motion of a body is momentum. An object's momentum increases with the object's massand with its velocity. The total momentum of all objects in an isolated system (one not affected by external forces) does not change with time, as described by the law of conservation of momentum. An object's motion, and thus its momentum, cannot change unless a force acts on the object.
Laws of motion
Main article: Mechanics
In physics, motion of massive bodies is described through two related sets of laws of mechanics. Motions of all large-scale and familiar objects in the universe (such as cars, projectiles, planets, cells, and humans) are described by classical mechanics, whereas the motion of very small atomic and sub-atomic objects is described by quantum mechanics. Historically, Newton and Euler formulated three laws of classical