Press space to start the simulation. It'll ask you some questions, answer the questions using only numbers, then watch the simulation.
*** The math on this is pretty off. I'll get around to fixing this some years from now *** I was just fiddling around with scratch's new scratch 2.0, to see what I can do with it. Every pixel represents 10 meters. I figured I'd make a spring-based canon simulator. You can decide what the atmosphere will be like, how fast the wind is, the size of the ball, the size of the planet it's on, and all sorts of other things. I had some problems with calculating drag, so I just made it that the drag coefficient is 0, making all drag to be 0 to make it easier. Most of the simulations will end up with the ball flying off into space or the ball plummeting to the ground quickly. Because planet masses and radii change gravity rapidly depending on if you take away or add some extra numebers. I could easily make a simplified version of this that only focused on the size, angle, spring strength, compression distance and radius of the ball, if anyone wanted a better working simulator.
