Physics Simulations - The Common Commonality

The key to upperras ar some som topics. If you can get a system that you are trying to analyze, and if you are able to simulate that system, the amount of things you can do is crazyan. In all physics simulations, the common commonality is a physics engine. And with a physics engine, you can basically do whatever you want. I've a friend that did this in great 12 computer sines. That a what for one of his programmes. He he, he simulated like, some complicated ball moving on earth with wod,. Like a very realistic physics engine. It's just so simple. The time step is a very fundamental thing. Understanding code is so understanding