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Aug 17, 2013 at 10:39 vote accept Everyone
Aug 9, 2013 at 23:27 comment added user6972 +1 Think of it as an exchange of momentum. As long as you are pushing mass away from you you will get the opposite force moving your mass. The speed at which you push mass away only helps to give extra acceleration, but you'll always get some acceleration.
Aug 9, 2013 at 19:45 history answered joshphysics CC BY-SA 3.0