From TDN

This page is a Work In Progress.

Check out these tutorials to learn about how to make use physics within TGE.

Physics

Overview
Understanding the requirements for physics engines is a must to implement them correctly into TGE.
Currently, nothing here.

RigidShape
A description of the RigidShape class.

ODE

Quick Links
These are just to provide quick resources for this section until this is further developed.

ODEScript Physics Resource ODEScript Forum Thread
ODEItem v0.10
Rigid Shape Class
A great thread about physics/simulation loop in Torque, look at Tim Gift's posts in the middle in particular.
Vehicle::updatePos - Physics clock too fast

Using PhysX