A very accurate Physics Simulator; I've installed it recently,and it is running perfectly well. I'd like to know how to change the properties of a particular body in step.
http://www.myphysicslab.com/ - some simulation. There is also Algodoo simulator
Very nice physics simulation for multiple kinds of projects.
If this is now the best physics simulator out there, then I don't know which is. I'm definitely gonna show this to my teachers!