Which of the following is NOT one of the four dynamics in golf?

In golf, the four primary dynamics that significantly affect a shot's outcome are ball speed, launch angle, ball spin, and club speed. These dynamics relate to the physical forces and angles involved in the flight of the golf ball and are critical for understanding and analyzing golf shots.

Grip pressure, while important for control and swing mechanics, does not fall into the category of dynamics that directly impact the physics of ball flight. Instead, it affects how the club is held and swung, which can indirectly influence the other dynamics, but it is not classified as one of the four fundamental dynamics in the context of golf shot performance. Therefore, recognizing grip pressure as separate from the core dynamics provides insight into its role in the overall execution of a golf swing.