% set the initial position and speed of the ball
% set the timestep (seconds)
% set the initial time (seconds)

% begin the main loop: move forward by one timestep
%   we quit when the ball's position reaches zero (or becomes negative)
% LOOP
    
    % first, we compute the change in velocity
    
    % second, we compute the change in position,
    %   using the new velocity
    %   (this is not the best choice ....)
              
    % now, we update all the variables to have their new values
    
    % check to see if we should quit


% End of LOOP

