bin/ball.py - ball trajectory simulator.
                    Assumes the following:
                    Mass = 2.75lbs
                    Diameter = 2'
                    rough surface, c_d = 0.47
                    air temperature = 20C
                    dry air

                    Takes distance to the goal in ft and launch angle as an input

                    Calculates launch velocity required to hit the high goal

                    Uses PyODE library with drag adjustment at each simulation step