Physics, 22.03.2021 02:50, kianadomingo2806

A 38 kg boy standing initially motionless on frictionless ice throws a 3.6 kg rock away from himself at a speed of 5.4 m/s. What is the boy speed after he throws the rock?

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A 38 kg boy standing initially motionless on frictionless ice throws a 3.6 kg rock away from himself...