Newtonian Dynamics is a branch of physics that describes the motion of objects based on the laws formulated by Sir Isaac Newton. It focuses on how forces affect the movement of objects, explaining concepts like acceleration, velocity, and mass. The three fundamental laws of motion provide a framework for understanding how and why objects move. The first law states that an object at rest stays at rest, and an object in motion stays in motion unless acted upon by a force. The second law relates force, mass, and acceleration, while the third law asserts that for every action, there is an equal and opposite reaction.