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13:06, 6 June 2012 Here are all the functions/methods available in the Physics Engine part of the API.<br />
Since it's based on Chipmunks Physics, [http://files.slembcke.net/chipmunk/release/Chipmunk-5.x/Chipmunk-5.3.4-Docs/ its official documentation] is worth of interest.
This library is not included unless the statement "require ('physics')" is found at the top of the Lua script. See [[require]] for more details.