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A 90 kg astronaut is stranded in space at a point

A 90-kg astronaut is stranded in space at a point 6.0 m from his spaceship, and he needs to get back in 4.0 min to control the spaceship. To get back, he throws a 0.50-kg piece of equipment so that it moves at a speed of directly away from the spaceship.

(a) Does he get back in time?

(b) How fast must he throw the piece of equipment so he gets back in time?

(a) Does he get back in time?

(b) How fast must he throw the piece of equipment so he gets back in time?

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