From: hitlong@yahoo.com   
      
   On Thursday, April 5, 2018 at 1:20:11 AM UTC-6, John Heath wrote:   
   >   
   > On Tuesday, April 3, 2018 at 8:05:29 AM UTC-4, Gary Harnagel wrote:   
   > >   
   > > On Tuesday, April 3, 2018 at 4:50:28 AM UTC-6, John Heath wrote:   
   > > >   
   > > > Now that we are back on subject I would enjoy hearing thoughts on   
   > > > this. Is it momentum or the center of mass that is being conserved?   
   > >   
   > > It seems they are the same thing.  If you assume center of mass is   
   > > conserved, you can prove that momentum is conserved and vice versa.   
   >   
   > Yes I hear you. It is not absolutely momentum conservation or absolutely   
   > center of mass conservation. They both work so why draw a line between   
   > the two.   
   >   
   > On another note what about one of the masses radioactively decaying   
   > losing mass but not violating the conservation of momentum as stated   
   > before. It is a tricky problem with no easy answers that I can think   
   > of. Ears open if you have a fix.   
      
   I don't see how radioactivity could possibly violate energy conservation.   
   The nucleus loses some mass when a particle escapes.  The new particle   
   has mass and energy, and it all balances by E = mc^2.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)