Rigid Body Dynamics is a branch of physics that studies the motion of solid objects that do not deform under stress. It focuses on how these objects move and interact with forces, such as gravity and friction. The key concepts include translation, rotation, and the effects of torque, which help describe how objects behave in various situations. In Rigid Body Dynamics, the motion of an object is often analyzed using principles from Newton's Laws of Motion. These principles allow us to predict how an object will respond to applied forces, making it essential for applications in fields like engineering, robotics, and animation.