Quote:
Originally Posted by Flieger
I must disagree. Power is how fast work is being done.
However, the change in an object's kinetic energy is equal to the total work done on it (assuming no frictional losses), so work and energy are very close.
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work and energy have exactly the same units, and are closely related concepts
power is the rate at which work is done and includes an additional time element in the denominator which is not found in the other 2 quantities.
dimensional analysis shows what are equivalents and what are not
dimensionally
work - ML^2T^-2
energy - ML^2T^-2
power - ML^2T^-3