CL          =    lift coefficient           =    0.22

   ρ           =    density of air             =    1.23  kg/m^3

   A           =   cross section area of ball  =    0.00426  m^2

   v           =   velocity of ball   (m/s)






  Q:  Can you compute the size and direction of the Magnus force 
      on a fastball thrown at 90 mph = 40.2 m/s?