As I recall, force varies as the square of velocity. Power varies as the
cube of velocity. For example, double the speed and the force squares to
four times original. But, you're also now going twice as fast, so you go
twice the distance in the same amount of time. Energy used is force times
distance, so you've used eight times the energy in the same amount of
time (or eight times the power lost to drag).
        So, force varies as square, power varies as cube.

Harold

On Fri, 31 Aug 2001 13:06:02 -0700 Ian Jordan <ian@TWINGLES.COM> writes:
> I was always under the impression that air drag was the square of
> velocity,
> and a search for "drag square velocity" on Google seems to return
> about
> 14,000 hits that agree.
>
> Am I missing something?
>
> > Air drag alone is KV^3.
>
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