The title of "father of classical mechanics" is generally given to Sir Isaac Newton.

Here's why:

* Newton's Laws of Motion: Newton formulated three fundamental laws of motion that are the cornerstone of classical mechanics. These laws describe how objects move under the influence of forces.

* Law of Universal Gravitation: Newton also discovered the law of universal gravitation, which explains the force of attraction between any two objects with mass. This law revolutionized our understanding of celestial mechanics.

* Calculus: Newton co-developed calculus, a powerful mathematical tool essential for describing motion and its relationship to forces.

While other scientists like Galileo Galilei and Johannes Kepler laid important groundwork, Newton's work synthesized and expanded upon their discoveries, establishing a comprehensive framework for understanding the motion of objects in the universe.