K = kcm + kint

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So K = kcm + kint

Since kcm relates to the center of mass, am I correct in my understanding to state
kcm = 0.5mv2cm?

What about kint? What does this variable refers to conceptually?
 

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UltrafastPED
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Presumable the "int" stands for "internal motion" ... vibrations, etc. Any coherent motion is a form of sound (phonons); incoherent internal motion shows up as heat.

The kinetic theory of gasses is based on the K_int of the gas molecules; the K_com would be the wind ...
 

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