3. A billiard cue ball having velocity of 5.0 cm/s and a mass 0.17 kg approaches a stationary red billiard ball of mass 0.16 kg. If the cue ball is stationary after their collision. a. what is the new velocity for the red ball? b. was this collision elastic or inelastic? 4. Ball A travelling with velocity, collides head-on with stationary ball B. If the mass of ball A is much greater than the mass of ball B. what is the velocity of ball B immediately after impact?