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Old 08-08-2012, 06:12 PM   #23 (permalink)
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Originally Posted by kennybobby View Post
The 375 in the denominator should be 349. (348.66)

That term comes from 0.5 times the conversion factor for mph^3 to (ft/sec)^3 divided by the definition factor for horsepower = 550 lbs-ft/sec.

conversion factor:
mph * 5280 ft/mile / 3600 seconds/hr = ft/sec.

The 375 value assumes a mile is only 5153 ft.
Three of my reference texts use the 375 value.I made a leap of faith that the Ph.Ds had checked their own work.Apologize for the trouble.
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