- Kinematics
- Where is it, Where is it going
- Position, velocity, acceleration
- Dynamics
- What is making the object move
- Force, Energy, Momentum
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In classical mechanics “kinematics” generally refers to the study of properties of motion— position, velocity, acceleration, etc.— without any consideration of why those quantities have the values they do. “Dynamics” means a study of the rules governing the interactions of these particles, which allow you to determine why the quantities have the values they do.
Thus, for example, problems involving motion with constant acceleration (“A car starts from rest and accelerates at 4m/s/s. How long does it take to cover 100m?”) are classified as kinematics, while problems involving forces (“A 100g mass is attached to a spring with a spring constant of 10 N/m and hangs vertically from a support. How much does the spring stretch?”) are classified as “dynamics.”
That’s kind of an operational definition, at least.
— terminology - What is the difference between “kinematics” and “dynamics”? - Physics Stack Exchange
This is distinction, while not clearly defined, is useful in solving problem