# kinetic energy

noun, Physics.
1.
the energy of a body or a system with respect to the motion of the body or of the particles in the system.
Compare potential energy.
Origin of kinetic energy
1865-1870
1865-70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for kinetic energy
Contemporary Examples
• What looks like filthy chaos at the moment is actually the  kinetic energy that gives birth to modern metropolises.

July 12, 2014
• There was a kinetic energy, a vibrancy that leapt off the screen that did, indeed, dazzle.

January 27, 2014
Historical Examples
• When a pendulum is vibrating, there is a continual transformation of potential into kinetic energy, and vice versa.

Various
• Part or all of their kinetic energy is thus converted into heat.

• Take an illustration of the way in which this reserve or potential energy is transformed into circulating or kinetic energy.

Warren Hilton
• Little by little it was losing its excess of kinetic energy.

Harold Leland Goodwin
• kinetic energy is the capacity for performing work which a body possesses by virtue of its motion.

Nehemiah Hawkins
• Energy of position is as truly a form of energy as heat or kinetic energy.

James Weir
• Pulse pressure measures the actual driving force, the kinetic energy of the heart.

Louis Marshall Warfield
• In this way the velocity or kinetic energy limit is imposed.

James Weir
British Dictionary definitions for kinetic energy

## kinetic energy

noun
1.
the energy of motion of a body, equal to the work it would do if it were brought to rest The translational kinetic energy depends on motion through space, and for a rigid body of constant mass is equal to the product of half the mass times the square of the speed. The rotational kinetic energy depends on rotation about an axis, and for a body of constant moment of inertia is equal to the product of half the moment of inertia times the square of the angular velocity. In relativistic physics kinetic energy is equal to the product of the increase of mass caused by motion times the square of the speed of light. The SI unit is the joule but the electronvolt is often used in atomic physics Ek, K, T, KE
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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kinetic energy in Medicine

kinetic energy n.
The energy possessed by a body because of its motion, equal to one half the mass of the body times the square of its speed.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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kinetic energy in Science
 kinetic energy   (kə-nět'ĭk)    The energy possessed by a system or object as a result of its motion. The kinetic energy of objects with mass is dependent upon the velocity and mass of the object, while the energy of waves depends on their velocity, frequency, and amplitude, as well as the density of the medium if there is one (as with ocean waves). Compare potential energy.
The American Heritage® Science Dictionary
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kinetic energy in Culture
kinetic energy [(ki-net-ik)]

The energy an object has because of its motion.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
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### Difficulty index for kinetic energy

Few English speakers likely know this word

### Word Value for kinetic

13
15
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