A ball has a mass of 10-Kg and is traveling to the right at 30 m/s. A second ball, which is suspended from a string and has a mass of 15-Kg, is traveling to the left at 12 m/s. The two balls experience an elastic head-on collision when the string is vertical. Determine: a) the speed of each ball after impact b) the height that the second ball will rise with respect to its lowest position (AFTER IMPACT)

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