Dave Hachadorian wrote: > 600 newtons = 134.885366 pounds force > > 125 kilometers per hour = 77.671399 miles per hour > > PSF = .004V^2 > PSF @ 77.67 mph = .004(77.67)^2 > PSF = 24.13 > > Except that he cited 120 km/hr, not 125 km/hr, so 75 mi/hr.. which is a small difference.. BUT I get 14.4 lb/sf are you sure about 0.004? I use 1/391 or about 0.0025