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021 (part 1 of 2) 10.0 points Assume: Moving to the right is positive. A(n) 5.7 g object moving to the right at 31 cm/s makes an elastic head-on collision with a 14 g object moving in the opposite direction at 17 cm/s. 31 es17 cm/s- .-31 cm/s 5.7 g 14 g Find the velocity of the first object imme- diately after the collision Answer in units of cm/s. 022 (part 2 of 2) 10.0 points Find the velocity of the second object after the collision. Answer in units of cm/s.

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From the law of conservation of momentum, From the law of conservation of energy 12 12 On solving the above two equations The final velocities of the each obiect are And The velocity of first ball after collision i:s 5.7020(31)+ 570414 2(14) 7+1417)-11 m/s 5.70+14 The velocity of second ball after collision is 2(570)(5.70-141)-25 m/s (%1 )(31)-( (31 570+14 )(17-25 m 5.70+14

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