The airplane having mass of 1.44E+4 kg is moving at 56.5 m/s. The pilot then revs up the engine so that the forward thrust of propeller becomes 7.80E+4 N. When the force of air resistance consists of a magnitude of 3.77E+4 N, determine the speed of the airplane after it has traveled 425 m. Suppose that the airplane is in the level flight all through this motion.