Newton's Laws and Collisions

This lecture introduces the concept of forces, distinguishing between external and internal forces, and explains Newton's third law of action and reaction. The conservation of kinetic energy is discussed through examples of collisions, highlighting the concept of impulse. The lecture also covers the conservation of momentum and energy in collisions, including elastic and inelastic collisions. The instructor demonstrates these principles using physical experiments and simulations, emphasizing the importance of understanding the dynamics of interactions between objects.