A tennis ball of mass mt is held a small distance above a basketball of mass mb. Both are dropped from a height h above the floor. (Take h to be the distance to the center of the basketball.) The basketball collides elastically with the floor. Find the speed vt of the tennis ball after it then collides elastically with the basketball. Calculate the height reached by the tennis ball if mb = 0.480 kg, mt = 0.060 kg and h = 2 m. (Caution: If you try this experimentally, get out of the way of the tennis ball!)