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A 60.0 kg astronaut is in outer space far from any object that would exert a...

A 60.0 kg astronaut is in outer space far from any object that would exert a significant gravitational force on him. He is outside of his spaceship and, initially, is stationary with respect to it. He would like to move toward his spaceship, but his jet pack is not functioning. To start his journey to safety, he pushes a 2.00 kg mallet with a speed of 5.0 m/s in the direction away from the ship. What is the astronauts speed after pushing the mallet?

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