What does kinematical mean?
Kinematical means relating to kinematics, the branch of mechanics concerned with describing how objects move. Its subject matter includes position, displacement, velocity, acceleration, and the mathematical relationships among them. A kinematical analysis can therefore determine how a mechanism, particle, or body will move when relevant motion quantities are known, without necessarily investigating the forces responsible for that motion. This distinguishes the field from dynamics, which studies the relationship between force and motion. The adjective is used in specialist engineering, physics, robotics, biomechanics, and related contexts, particularly in expressions such as “kinematical equations” and “kinematical analysis.” Although “kinematic” is the more frequent modern form, “kinematical” remains a precise and accepted adjective. The word is especially useful for recognizing the distinction between describing the geometry of motion and explaining its causes.
adjectiveRelating to kinematics, the branch of mechanics concerned with the motion of bodies and the forces and laws governing that motion.
- Of or relating to kinematics; concerned with the geometric description and mathematical analysis of motion.
"The engineer used a kinematical model to calculate the mechanism's motion."
"The lecture introduced the basic kinematical equations used to describe moving particles."
"The mechanism was examined as a purely kinematical system, without accounting for the forces acting on its components."
A kinematical system may move, but the mathematics of kinematics asks exactly how it moves without asking what pushes it.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does kinematical come from?
The word ultimately comes from Greek kinesis, meaning “movement,” combined with the Greek-derived suffix -mathe-, associated with learning or mathematical treatment. The related English terms “kinematics,” “kinematic,” and “kinematically” developed from this foundation. “Kinematics” is the name of the mathematical field, while its adjective forms relate to the equations and methods used in that field.
Related word forms
How kinematical is actually used
This is a specialized technical term. In modern scientific writing, “kinematic” is generally more common, although “kinematical” remains standard and appears especially in formal and traditional technical contexts.
Easily confused with kinematical
“Kinematic” is the more usual adjective in technical English, while “kinematical” is a less common but fully formed equivalent.
Kinematics describes motion in terms of position, velocity, and acceleration, whereas dynamics explains how forces produce changes in motion.