I came across this bit of Flash work that's a tutorial on 2D game physics:

http://www.rit.edu/~ndr0470/game_physics/

Wow thats a great reference, thanks for the find =D

Very nice. Very understandable. Even better is the one referenced by it:

http://www.geocities.com/SiliconValley/C...hysics.htm

Me three, totally cool link. Thanks for posting it!

Gravity:

Quote: "Watch how the gravity value decrements the y velocity of the apples"

Very odd choice...

Walking & Jumping: The code has a "x_velocity" (a misleading variable name...) of 10, but for some reason the demo has a "speed" input box, and the left & right motion not only doesn't match that value, it's different for each direction (?)

I wouldn't call this a good tutorial...

Edit: I would recommend reading the tutorial linked at the end first, especially the terms' definitions.