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A 20.3 kg mass has a 4 i - 5 j m/s velocity and a 31.5...

A 20.3 kg mass has a 4 i - 5 j m/s velocity and a 31.5 kg mass has a 5 i - 8 j m/s velocity. Calculate the magnitude of the total momentum (in kg*m/s) of the two masses.

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