An airplane of mass 1.3 104 kg is moving at 64 m/s. The pilot then revs up the engine so that the forward thrust by the air around the propeller becomes 7.2 104 N. If the force exerted by air resistance on the body of the airplane has a magnitude of 4.0 104 N, find the speed of the airplane after it has traveled 500 m. Assume that the airplane is in level flight throughout this motion.

Question

An airplane of mass 1.3  104 kg is moving at 64 m/s. The pilot then revs up the engine so that the forward thrust by the air around the propeller becomes 7.2  104 N. If the force exerted by air resistance on the body of the airplane has a magnitude of 4.0  104 N, find the speed of the airplane after it has traveled 500 m. Assume that the airplane is in level flight throughout this motion.