November 26, 2015

Homework Help: Physics

Posted by Christina Y. on Wednesday, June 6, 2012 at 10:37am.

An astronaut of mass 82.2 kg is 31.2 m far out in space, with both the space ship and the astronaut at rest with respect to each other. Without a thruster, the only way to return to the ship is to throw his 0.502 kg wrench directly away from the ship. If he throws the wrench with a speed of 20.0 m/s, how many seconds does it take him to reach the ship?

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