Physics Engines

How do I go about making physics engines? Aren't they just basic manipulation of 3D objects that are rendered? What can I do to take this engine a step further? I have extensive C++ programming knowledge and have done 3D work before.

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http://lmgtfy.com/?q=physics+engine+basics
http://stackoverflow.com

https://secure.wikimedia.org/wikipedia/en/wiki/Standard_Model

Start by implementing that.

Then you're done.

>>5
OP here thank you so much for your help i was able to finish my project on the deadline my professor said he'll look over it then called the patent office and suddenly left and i haven't seen him since i wonder what happened :(

>>5
THIS POST^{gave me a boner}