Explore the fundamental principles of physics in this comprehensive 45-minute lecture on physical forces, Newton's laws of motion, and mechanics. Delve into the relationship between force, mass, and acceleration, understanding the equation F = ma. Examine gravitational force and its impact on mass and weight, distinguishing between these concepts and their respective units of measurement. Investigate momentum, including linear and angular momentum, and learn about Newton's third law of action and reaction. Compare speed and velocity, and analyze the concepts of positive and negative forces. Discover the relationship between work, force, and displacement. Designed for students preparing for MCAT, DAT, ACT, SAT, GSCE, and AP Physics exams, this lecture provides essential knowledge for mastering mechanics and physical forces in physics.