A 140 kg astronaut including space suit acquires a speed, Ask an Expert

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A 140 kg astronaut (including space suit) acquires a speed of2.50 m/s by pushing off with his legs from an 1800 kg space capsule.

(a) What is the change in speed of the space capsule?

(b)If the push lasts 0.500 s, what is the average force exerted byeach on the other? As the reference fram, use the position of thecapsule before the push.

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