In physics and engineering, kinetics is the branch of classical mechanics that is concerned with the relationship between motion and its causes, specifically, forces and torques.kinetics. Encyclopædia Britannica Online.Kinetics must not be confused with kinematics, the study of motion without consideration of the physical circumstances causing it (see, e.g., ), which is a separate branch of classical mechanics. Since the mid-20th century, the term dynamics (or analytical dynamics) has largely superseded kinetics in physics textbooks,See this discussion. though the term is still used in engineering and biomechanics.
In plasma physics, kinetics refers to the study of continua in velocity space. This is usually in the context of non-thermal (non-Maxwellian) velocity distributions, or processes that perturb thermal distributions. These "kinetic plasmas" cannot be adequately described with fluid equations.
The term kinetics is also used to refer to chemical kinetics, particularly in chemical physics and physical chemistry. In such uses, a qualifier is often used or implied, for example: "physical kinetics", "crystal growth kinetics", and so on.
See also
Analytical dynamics Dynamics Kinesiology
References