Rigid Body Physics modeling deals with objects as solid, unchangeable sets of mass having a velocity that can be connected together via various joint types that allow one body's motion to affect another.

Xj3D rigid-body car example

These examples support the X3D Rigid Body Physics component for simple kinematics, first implemented by Xj3D.

Warning: the Rigid Body Physics component in not widely supported and these examples are insufficiently tested. Further work is welcome.

Of related interest: Distributed Interactive Simulation (DIS) examples.