The laws of motion constitute a foundational set of principles in classical mechanics, defining the relationship between force, mass, and movement. The first law states that an object at rest will remain at rest, and an object in motion will remain in uniform motion along a straight line, unless acted upon by a net external force. The second law quantifies this interaction, asserting that the rate of change of an object's momentum is directly proportional to the net external force applied and inversely proportional to the object's mass, leading to the core relationship that net force equals the rate of change of momentum. The third law dictates that for every action exerted on an object, an equal and opposite reaction force is simultaneously exerted on the object that applied the force. These principles provide a mathematical framework for predicting the mechanical behavior of physical systems.