This was amazing.
I am a huge fan of physics, it was my best subject back in highschool. I have to say, you really know your shit. What I would really love to see is a flash calculator for physics. If you could make an interactive cheat sheet where you could input various data into the equations, and then have the action script solve it, that would be extremely helpful for students all over the world. Keep it up man, I gave you a 5.