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The energy which a
body possesses as a consequence of its motion, defined as one-half the product
of its mass m and the square of its speed v, 1/2 mv2. The kinetic energy per unit volume of a
fluid parcel is the 1/2 p v2 , where p is the density and v
the speed of the parcel. See potential
</dd>For relativistic speeds the kinetic energy is given by Ek =
mc2 - m0c2
where c is the velocity of light in a vacuum, m0
is the rest mass, and m is the moving mass.
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use