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April 20, 2014

Homework Help: physics

Posted by emily on Sunday, September 25, 2011 at 10:50am.

suppose that all the people of the earth went to the north pole and on a signal all jump straight up. estimate the recoil speed of the earth. the mass of the earth is 6 x 10^24 kg and there are about 6 billion people(6 x 10^9).

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