Click the flag twice to begin. Use the arrow keys to apply a force in that direction. mess around and enjoy. I've worked things out in the programing so that everything is pretty much interdependent. This means that you can change the scale simply by changing the gravity term and the coefficient of friction term. Manipulate the programing as you see fit.
Okay, So I'm taking AP Physics (which despite its reputation, I'm finding fun) and I need to do a few projects. I figured, "Why not put everything I've learned into a few physics simulators?" So here it is. I've done all of the artwork (not that there's much of it) and programing. For the most part, (baring areas that Scratch wasn't fast enough to handle, i.e. the neutral force) all the programing is based off of actual Physics equations.