Here a few fun roller coaster simulations. Some are very simple and others calculate g-forces, and velocity.
Coaster: This simulation lets you change the height of the hills, amount of gravity, speed, and friction. It will show you how the roller coaster car will run on the track and if you go too fast, the cart will fly off!
Rollercoaster Designer: This simulation allows you change the height and steepness of the hills. It measures the G-forces and the speed. There is also a little “South-Park”-like character in the corner that represents a passenger. It will show and tell you if the g-forces are too intense and you end up knocking out the passenger. As the levels progress, the design challenges are harder.
Discovery Kids Build your own roller coaster: This game is pretty simple. Add pre-designed features to create your own roller coaster. When you run it, you get to hear screaming sounds and there’s a “Fear-o-meter!”
Fantasy Rollercoaster: Okay, so this is just a game. You control the rollercoaster’s speed and you try not to kill you passengers. Not really physics, but kinda fun anyway.