*15-144. A four-engine commercial jumbo jet is cruisingat a constant speed of 800 km/h in level flight when all fourengines are in operation. Each of the engines is capable ofdischarging combustion gases with a velocity of 775 m/srelative to the plane. If during a test two of the engines, oneon each side of the plane, are shut off, determine the newcruising speed of the jet. Assume that air resistance (drag) isproportional to the square of the speed, that is, F, = cv,where c is a constant to be determined. Neglect the loss ofmass due to fuel consumption.

Answered: *15-144. A four-engine commercial jumbo…

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