In an earlier contribution to this discussion,
The Natural Philosopher wrote:


aerodynamic drag is the cube of
velocity. Or it might be the square.


Either - it depends on what parameter you're talking about!

Aerodynamic *force* is proportional to the square of velocity. The *power*
(force x speed) needed to overcome aerodynamic drag is proportional to the
cube of velocity.
--
Cheers,
Roger
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