Study of physical motion, interactions and their dynamical laws. Classical mechanics and quantum mechanics give different descriptions within this broad subject.
The study of physical evolution through dynamical equations, including how forces affect motion. A law relating force to acceleration must be combined with an interaction law and initial conditions to predict a history.

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Mechanics is a branch of physics that deals with the study of motion, forces, and the behavior of physical objects. It provides a framework for understanding how and why objects move or remain at rest, and it encompasses a variety of concepts and theories. The field of mechanics can be broadly divided into two main categories: 1. **Classical Mechanics**: This area focuses on the motion of macroscopic objects (from projectiles to planets) and is governed by classical physics principles.
Mechanics by Ciro Santilli 40 Updated 2025-07-16
This section is more precisely about classical mechanics.