Quote:
Originally Posted by JulianEdgar
I would have thought a qualified engineer would find this all very easy. But let the sociologist / geographer / journalist help you!
550 metres altitude with a sea level pressure of 1013.25mB = 951mB
951mB at (say) 25 degrees C = air density of 1.1 kg/cubic metre
80 km/h (22.2 m/s)
Calculated stagnation pressure = 271 Pa.
Pressures measured on car:
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My apology, I just now saw the 80 km/h in the caption. Thanks!