Ball 1, with a mass of 120g and traveling at 15m/s , collides head on with ball 2, which has a mass of 330g and is initially at rest. What are the final velocities of each ball if the collision is perfectly elastic? in m/s (Vfx)1? (Vfx)2? What are the final velocities of each ball if the collision is perfectly inelastic? (Vfx)1? (Vfx)2?