10: Momentum, System of Particles, and Conservation of Momentum Last updated Dec 30, 2020 Save as PDF 9.4: Appendix 9A The Gravitational Field of a Spherical Shell of Matter . 10.1: Introduction Page ID24486 Peter DourmashkinMassachusetts Institute of Technology via MIT OpenCourseWare ( \newcommand{\kernel}{\mathrm{null}\,}\) 10.1: Introduction10.2: Momentum (Quantity of Motion) and Average Impulse10.3: External and Internal Forces and the Change in Momentum of a System10.4: System of Particles10.5: Center of Mass10.6: Translational Motion of the Center of Mass10.7: Constancy of Momentum and Isolated Systems10.8: Momentum Changes and Non-isolated Systems10.9: Worked Examples