Here's why:

* Focus on Motion and Forces: Mechanics deals with the study of motion, forces, and their effects on objects. This is a core concept within the realm of physics.

* Fundamental Laws: Mechanics is built upon fundamental laws of physics, like Newton's Laws of Motion and the law of conservation of energy.

* Wide Applicability: Mechanics principles are used to understand and explain a vast range of phenomena, from the movement of planets to the workings of machines.

While mechanics is a major area within physics, it's further divided into sub-branches:

* Classical Mechanics: Deals with the motion of macroscopic objects under the influence of forces.

* Quantum Mechanics: Focuses on the motion of microscopic particles and their wave-like properties.

* Fluid Mechanics: Studies the behavior of fluids (liquids and gases).

* Continuum Mechanics: Deals with the deformation and flow of continuous materials.

So, mechanics is not only a branch of physics but also a foundational element within the broader study of the universe and its behavior.