A turbojet airplane of mass m = 4000 kg has a drag curve D = 0.75 v 2 + 0....
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A turbojet airplane of mass m = 4000 kg has a drag curve D = 0.75 v2 + 0.04 W2/v2 at sea level (ρ = 1.225 kgm−3) and the engine is producing a thrust T = 20000 N,. What is the descent angle if the airplane is flying at a speed v = 100 ms−1?