Garmaine asked 4 years ago
What is the difference of air drag in ground level with let say moderate speeds like fast cars 200km/h to 400km/h with high speed vehicle reentry at high altitude where the air is so rarified. Making more simple is: {Low speed ( up to 0.5 mach ) + ground level air pressure )} ****versus**** { High speed ( 6- 7 km/s + air density at Kármán line.
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