XPost: sci.physics, sci.space.tech   
   From: gdpusch@NO.xnet.SPAM.com   
      
   j.schoenfeld@programmer.net (John Schoenfeld) writes:   
      
   > The direction of the rockets acceleration is irrespective of the   
   > direction of mass explusion. I could build a rocket that expels its   
   > mass upwards and it would still accelerate upwards.   
      
   Bullshit. Your claim violates the law of conservation of momentum.   
   (BTW, do you know how an aircraft thrust reverser works ???)   
      
   [False comic-book explanation of how rockets work that violates Newton's Laws   
   sent to /dev/null where it belongs.]   
      
      
   -- Gordon D. Pusch   
      
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