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Kinematics / dynamics

Dictionary definitions

Kinematics

The branch of mechanics concerned with the motion of objects without reference to the forces which cause the motion.

Dynamics

The branch of mechanics concerned with the motion of bodies under the action of forces.

Comments

This looks like a distinction that only exists in the Newtonian world.
The hidden assumption, or maybe not so hidden is that, you need a force to create and sustain motion.
And this is the Newtonian force of gravity.
But in physics everything is force.
There is no kinematics in Newtonian physics.

Chatgpt

I asked chatgpt and it confirmed my suspicion that dynamics refers to Newtonian occult force:

The term “dynamics” as it is understood in physics today was introduced after Newton’s time, although its roots and early uses precede him in a broader, non-technical sense. Here’s a brief historical overview:

Before Newton (Pre-17th Century):

The word “dynamics” comes from the Greek word “dynamis” (δύναμις), meaning “power” or “force.” In ancient Greek philosophy, particularly in Aristotle’s works, “dynamis” referred to potentiality or the capacity to bring about change.
In the medieval period, the term “dynamis” and its derivatives were used in a more philosophical or theological context, often related to ideas of power or capability rather than in a physical or mathematical sense.

After Newton (17th Century and Beyond):

Newton’s groundbreaking work, Philosophiæ Naturalis Principia Mathematica (1687), laid the foundation for what we now call dynamics, but Newton himself did not use the term “dynamics.” Instead, he described the principles of motion and force without assigning this field a specific name.
The term “dynamics” in its modern sense was popularized in the 18th century by scientists such as Jean le Rond d’Alembert and Leonhard Euler, who formalized the study of forces and motion as a distinct area of mechanics. Euler, in particular, used “dynamics” to describe the study of forces and their effects on motion, distinguishing it from statics, which deals with bodies at rest or in equilibrium.

Conclusion:

The word “dynamics” existed before Newton in a general, philosophical sense but was not used in the specific context of physics or mechanics. Its modern application as a technical term in physics emerged in the 18th century, influenced by post-Newtonian developments in mechanics.