From: fortunati.luigi@gmail.com   
      
   In free fall, can you go anywhere freely or are there constraints that   
   prevent this?   
      
   Of course you can't fall straight up and you can't fall sideways.   
      
   In free fall you can only go in one direction (the vertical one) and in   
   only one versus (downward).   
      
   The elevator (in free fall) and everything inside it are forced to fall   
   (always) vertically and (always) downwards.   
      
   So there is a constraint.   
      
   And, in free fall, can one move in a straight and uniform motion?   
      
   No, in free fall the motion is always accelerated.   
      
   The elevator (in free fall) and everything inside it are forced to   
   always accelerate.   
      
   So there is another constraint.   
      
   So why call it "free fall" and not "forced fall"?   
      
   Luigi Fortunati.   
      
   [[Mod. note -- The "free" in "free fall" means that no non-gravitational   
   forces are acting on the falling body.  It's a statement about what forces   
   are (not) acting on the body, not about the uniqueness or non-uniqueness   
   of the resulting motion.  -- jt]]   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)