In our physics class, we made cannons, calculated the trajectory, and tried to hit targets at various distances---one group in our class made an air-cannon, and the thing was massive...shot the tennis balls like bullets (not much left to calculate there if your targets disentigrate on impact...I believed we received calls from the army wanting to buy the weapon) But anyways, just an idea...plus, you might just be able to coerce your teacher into giving you an A, with a little help from mr. cannon
