Abody of mass 4.5 kg makes an elastic collision with another body at rest and continues to move in the original direction but with 1/5 of its original speed. (a) what is the mass of the other body? (b) what is the speed of the two-body center of mass if the initial speed of the 4.5 kg body was 8.9 m/s?
Answers: 2
(equation I)
(equation II)
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