Spacecraft Voyager 2 (of mass m and speed v relative to the Sun) approaches the planet Jupiter (of mass M and speed V relative to the Sun) as shown in Fig. 10-60. The spacecraft rounds the planet and departs in the opposite direction. What is its speed, relative to the Sun, after this slingshot encounter, which can be analyzed as a collision? Assume v = 12 km/s and V = 13 km/s (the orbital speed of Jupiter). The mass of Jupiter is very much greater than the mass of the spacecraft (M >> m). I don't understand how to solve this problem without numbers for masses.