A spacecraft of mass = 4673 kg with a speed 5.0 10 m/s approaches Saturn which is moving in the opposite direction with a speed 9.6 10 m/s. After interacting gravitationally with Saturn, the spacecraft swings around Saturn and heads off in the opposite direction it approached. The mass of Saturn is = 5.69 10 kg. Find the final speed (in m/s) of the spacecraft after it is far enough away from Saturn to be nearly free of Saturn's gravitational pull.