What is the mass of the other body

Reference no: EM13662579

A body of mass 2.1 kg makes an elastic collision with another body at rest and continues to move in the original direction but by one-fourth 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 2.1 kg body was 2.9 m/s?

Reference no: EM13662579

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