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An astronaut of mass 80 kg holds an empty oxygen tank of mass 10 kg. He and the oxygen tank are stationary to start. By


An astronaut of mass 80 kg holds an empty oxygen tank of mass 10 kg. He and the oxygen tank are stationary to start. By pushing the tank to the left with a speed of 2 m/s, the astronaut recoils in the opposite direction. What is the velocity that the astronaut moves off into space? 

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