Lecture
This lecture covers the principles of momentum and energy conservation in collisions, distinguishing between elastic and inelastic collisions. It explores how kinetic energy is preserved in elastic collisions, while inelastic collisions result in energy loss to other forms. The instructor demonstrates the application of these concepts through various scenarios, including perfectly inelastic collisions and collisions in two or three dimensions. The lecture also addresses conceptual questions related to the outcomes of different types of collisions, providing a comprehensive understanding of the topic.