A more complicated case is the kinematics of a [[system]] of rigid bodies, possibly linked together by [[mechanical]] joints. The kinematic description of fluid [[flow]] is even more complicated, and not generally [[thought]] of in the [[context]] of kinematics. | A more complicated case is the kinematics of a [[system]] of rigid bodies, possibly linked together by [[mechanical]] joints. The kinematic description of fluid [[flow]] is even more complicated, and not generally [[thought]] of in the [[context]] of kinematics. |