 
  Suppose that we drop a ball of mass M = 1 kg
  in a vacuum chamber.  
  Q:  Write down an equation which gives the
          the acceleration as a function of time
          for this case.
          (Yes, it is trivial)
  Q:  Integrate to find an equation for velocity
          as a function of time.
  Q:  Integrate again to find an equation for position
          as a function of time.
 
 
 
  Q:  Can you integrate this equation find an equation for velocity
          as a function of time?
 
 
 
 
