This document is a comprehensive revision summary of biomechanics for Physical Education (PE) studies. It covers key concepts such as Newton’s Laws of Motion, lever systems (first, second, and third class), momentum (linear and angular), impulse, torque, and force application. It also includes principles related to fluid mechanics like drag, lift, buoyancy, and the Magnus effect. The summary explains how these scientific principles apply to movement and performance in sports, using real-world examples like bicep curls, tennis hits, and swimming dynamics. It concludes with qualitative and quantitative analysis methods for evaluating athletic performance through biomechanical principles.