Lecture
This lecture covers the fundamental concepts of kinematics, including reference frames, coordinate systems, material points, trajectories, and equations of motion. It explains how to describe the position, velocity, and acceleration of objects in space-time, emphasizing the importance of reference points and time references. Various coordinate systems such as Cartesian, polar, cylindrical, and spherical are discussed, highlighting their parametrization and applications. The lecture also delves into the distinction between trajectories and equations of motion, illustrating with examples like straight lines, circles, and parabolas.