Starting with an initial speed of 5 m/s at a height of 0.3 m, a 1.5 kg ball swings downward and strikes a 4.6 kg ball that is at rest. (a) Find the speed of the 1.5 kg ball just before impact. (b) Assuming that the collision is completely inelastic, find the velocity of both balls just after the collision. (c) How high do the balls swing after the collision, ignoring air resistance?