Question 4 - There is a system of two objects "A" and "B", which have a head-on collision and it could be considered an isolated system. We know follewing information about the objects: Ma = 6.0 kg, VAL = 5.5" and moving in the +x-direction, mg = 8.0 kg, Vbi = 4.0 m/s, moving in the = -x-direction. Determine the final velocity of each object if: (a) the objects stick together after the collision. (b) the collision is elastic. (c) object "A" is at rest after the collision, when object "B" is moving.