Question

A smaller ball (mass m1) is aligned slightly above a larger ball (0.63 kg), and the two are dropped simultaneously from a height of 1.8m. (a) Draw a (i) before/after sketch and (ii) momentum & energy bar diagrams of the situation. (b) If the larger ball rebounds elatically from the floor and then the small ball rebounds elastically from the larger ball, what value of m results in the larger ball stopping when it collides with the small ball? (c) What height does the small ball then reach?

Answer 1