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A 100-kg astronaut wears a 10-kg tool pack on a spacewalk. He is 12 m to...

A 100-kg astronaut wears a 10-kg tool pack on a spacewalk. He is 12 m to the right of his (stationary) spaceship, and he is moving to the right, away from the spaceship, at 0.1 m/s. At this point, his tether breaks. To get back to the spaceship, he throws the 10-kg tool bag to the right at 5.0 m/s (measured relative to the stationary spaceship), so that he can achieve a recoil velocity to the left. How long will it take him to return to the spaceship

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