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So... what is the significance of wind resistance? It all very much depends. Because, you see, wind resistance is very different from friction. Whereas the force from friction remains constant with speed, wind resistance increases. To make things even more interesting... it does not increase linearly with speed, as one might naively assume. The force of wind resistance increases as the *square* of the speed. Since power is work/time and work = force x distance, and distance per second increases with speed, the power required to overcome wind resistance increases as the *cube* of the speed.(!) The power required to overcome mechanical friction, like tire rolling resistance, increases directly as the speed.
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Steve, I have to ask you a question...
Did you stay at a Holiday Inn Express last night?
03-28-2010, 08:25 PM
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