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11 Mar 2010 00:45:25 IST

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what kinetic energy

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what kinetic energy

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winx

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Joined: 28 Jan 2010

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11 Mar 2010 06:33:12 IST

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Kinetic energy (KE) is energy associated with movement as a whole (linear or rotational or both).

Kinetic energy of a body therefore does not include thermal energy (associated with internal movement, of its molecules), nor any other form of potential energy (such as chemical or nuclear energy, or energy associated with its own deformation or with its position in a gravitational or other field).

Since total energy is always conserved, a gain (or loss) in kinetic energy is always accompanied by an equal loss (or gain) in other forms of energy.

Kinetic Energy Concept

Kinetic energy is energy of motion. The kinetic energy of an object is the energy it possesses because of its motion. The kinetic energy of a point mass m is given by

winx

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Joined: 28 Jan 2010

Posts: 299

11 Mar 2010 06:34:22 IST

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check dis out for important equations related 2 kinetic enrgy

http://www.physicsforums.com/library.php?do=view_item&itemid=132

edison

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Joined: 19 Oct 2006

Posts: 7449

11 Mar 2010 11:45:07 IST

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Kinetic Energy

Kinetic energy is energy of motion. The kinetic energy of an object is the energy it possesses because of its motion. The kinetic energy* of a point mass m is given by

Kinetic energy is an expression of the fact that a moving object can do work on anything it hits; it quantifies the amount of work the object could do as a result of its motion. The total mechanical energy of an object is the sum of its kinetic energy and potential energy.

For an object of finite size, this kinetic energy is called the translational kinetic energy of the mass to distinguish it from any rotational kinetic energy it might possess - the total kinetic energy of a mass can be expressed as the sum of the translational kinetic energy of its center of mass plus the kinetic energy of rotation about its center of mass.

*This assumes that the speed is much less than the speed of light. If the speed is comparable with c then the relativistic kinetic energy expression must be used

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