Kinetics must not be confused with سینماتیک, the study of motion without consideration of the physical circumstances causing it (see, e.g. , Edmund Taylor Whittaker (1988). A Treatise on the Analytical Dynamics of Particles and Rigid Bodies (Reprint of the Fourth Edition of 1936 with a forward by William McCrea ed.). Cambridge University Press. p. Chapter 1. ISBN0-521-35883-3.), which is a separate branch of classical mechanics.