In the two-sphere arrangement of Figure, assume that sphere 1 has a mass of 45 g and an initial height of 7.2 cm, and that sphere 2 has a mass of 75 g. After sphere 1 is released and collides elastically with sphere 2, what height is reached by (a) sphere 1 and (b) sphere 2? After the next (elastic) collision, what height is reached by (c) sphere 1 and (d) sphere 2? (Hint: Do not use rounded-off values.) (a) Number i 0.0045 (b) Number i (c) Number i 0.072 (d) Number i 0 A h Units m ! Units Units m Units m m 7/21 m