https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:energy/x1baed5db7c1bb50b:conservation-of-energy/v/ms-conservation-of-energy 2025-07-01T10:10:08.145512912Z Conservation of energy If a system is isolated so that no energy is enters or leaves the system, the total amount of energy in the system remains the same over time. Energy may convert between kinetic and potential, but the total amount is constant. If energy is transferred into or out of the system, the total energy of the system does change. Energy often transfers out of systems as sound and thermal energy. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/5340bfae-2573-455a-869e-47e2556e3015_1280_720_base.png Conservation of energy If a system is isolated so that no energy is enters or leaves the system, the total amount of energy in the system remains the same over time. Energy may convert between kinetic and potential, but the total amount is constant. If energy is transferred into or out of the system, the total energy of the system does change. Energy often transfers out of systems as sound and thermal energy. https://cdn.kastatic.org/ka-youtube-converted/Tf4A93763Bw.mp4/Tf4A93763Bw.mp4 429 Conservation of energy https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:conservation-fo-energy/a/changes-in-energy 2026-06-04T16:00:54.297192544Z Learn and try: Conservation of energy Use a PhET simulation to investigate energy transfers and transformations. Apply the law of conservation of energy to different scenarios. article https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:conservation-fo-energy/e/understand-changes-in-energy 2026-06-30T16:30:41.535282189Z Understand: Conservation of energy Check your understanding of conservation of energy in this set of free, standards-aligned practice questions. Khan Academy exercise https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:energy/x1baed5db7c1bb50b:conservation-of-energy/e/apply-changes-in-energy 2026-06-30T16:30:41.535282189Z Apply: Conservation of energy Apply your knowledge of conservation of energy in this set of free, standards-aligned practice questions. Khan Academy exercise