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July 26, 2014

Homework Help: Physics- momentum please helppp!!!

Posted by Miso on Wednesday, April 25, 2012 at 11:34pm.

An Astronut is working in space station when he notices that his safety rope tying him to the station has come undone. He is 5.00 meters away and drifting further away at 0.100 m/s. Fortunately he is holding a 1.00 kg hammer as well as a 15.00 kg antenna (that costs $100000). The mass of the Astronut by himself is 95.00 kg. He can throw the hammer at 10.00 m/s and the antenna at 2.00 m/s.
a)- clearly explain how (why) he can get back to safety by throwing the object(s). Which direction should he throw them?
b)- how long (if ever) will take him to get back to the space station by throwing the hammer ?
c)- how long will it take him to get back if he throws away the hammer and the expensive antenna?
(neglect any time difference between throwing the two objects)

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