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Kinetic energy

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In physics, the kinetic energy o an object is the energy which it possesses due tae its motion.[1] It is defined as the wirk needit tae accelerate a body o a gien mass frae rest tae its statit velocity. Havin gained this energy durin its acceleration, the body maintains this kinetic energy unless its speed chynges. The same amoont o wirk is duin bi the body in deceleratin frae its current speed tae a state o rest.

In classical mechanics, the kinetic energy o a non-rotatin object o mass m travelin at a speed v is ½ mv². In relativistic mechanics, this is anly a guid approximation when v is much less nor the speed o licht.

References[eedit | eedit soorce]

  1. Jain, Mahesh C. (2009). Textbook of Engineering Physics (Part I). PHI Learning Pvt. Ltd. p. 9. ISBN 81-203-3862-6., Chapter 1, p. 9