Introduction to Kinematics

This lecture introduces the concept of kinematics, focusing on the description of motion through tools like position, velocity, and acceleration. The instructor explains the importance of choosing a reference frame and coordinates system, illustrating with examples like point particles and complex systems. The lecture covers trajectories, curvilinear motion, and equations of motion, emphasizing the distinction between trajectory and path. The instructor also discusses the concept of curvilinear abscissa, which represents the distance traveled along a trajectory. Additionally, the lecture delves into velocity, both vectorial and scalar, and demonstrates the tangential nature of velocity vectors to trajectories through a detailed explanation.