If we dropped a car weighing 4451 lbs. from a C-130 aircraft at 5,280 ft, how...

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Physics

If we dropped a car weighing 4451 lbs. from a C-130aircraft at 5,280 ft, how much horsepower would it take to drivepast it before it hits the ground if youâ€™re 1 mileaway?

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Airdensity @ sea level, 59 degrees, no wind = p = .002377slugs/ft^3

Coefficient of drag (flat plate, NASA) = C(d) =1.28

Weight = W = 4451 lbs

Gravitation constant = g = 32.2 ft/sec^2

Area = A = 197.5\"\" long x 78.2\"\" wide x (1 ft^2/ 14in^2)

Vehicle falls flat, wheels 1st, straight down, atconstant acceleration with no aerodynamic drag until terminalvelocity

Horsepower needed to accelerate is AVERAGE - notpeak

100% driveline efficiency

Answer & Explanation Solved by verified expert

3.6 Ratings (296 Votes)

Gravitational force on the car mgair drag force 12 v2Cd AWhen the car reached terminal velocity both force on the carwill be equalmg 12 v2Cd Aterminal vel See Answer

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