This chapter introduces and explores the fundamental conservation laws of momentum and angular momentum, which, along with energy conservation, form the core principles of physics. Finally, a summary ...This chapter introduces and explores the fundamental conservation laws of momentum and angular momentum, which, along with energy conservation, form the core principles of physics. Finally, a summary of linear and angular analogs reinforces the interconnectedness of translational and rotational motion, providing a foundation for understanding the behavior of interacting systems in various physical contexts.