a medium-sized jet has a 3.8m diameter fuselage and a loaded mass of 85,000kg. the drag on an airplane is primarily due to the cylindrical fuselage, and aerodynamic shaping gives it a drag coefficient of 0.37. how much thrust must the jet's engines provide so that the plane flies at a constant 280m/s at an altitude where the density of air is 1.0 kg/m3?