Springs?? (10 lbs. at 22 ft/s)

[pfreivald]

I did the math assuming that you wanted to launch the ball at a 45-degree angle in order to maximize the 'sweet spot' for shooting, and found that the spring requirements are unreasonable. (From the floor to over the overpass was 221 J not including losses due to the game happening in real-life as opposed to a physics classroom -- the spring constants needed were **huge**.)

The other problem is that you cannot transfer the energy fast enough to launch the ball without running awry of the safety requirements.

Patrick