https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:conservation-fo-energy/v/conservation_of_energy 2024-07-01T11:54:52.194339821Z Conservation of energy Energy is a conserved quantity. If a system is isolated, the total energy of the system remains constant as energy converts from one form to another. If a system is not isolated, the total energy of the system can change. However, the amount by which the system's energy changes is exactly equal to the amount of energy that transferred to or from the surroundings. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/a686edcf-906c-481c-8850-0ba57bdbee7f_1280_720_base.png Conservation of energy Energy is a conserved quantity. If a system is isolated, the total energy of the system remains constant as energy converts from one form to another. If a system is not isolated, the total energy of the system can change. However, the amount by which the system's energy changes is exactly equal to the amount of energy that transferred to or from the surroundings. https://cdn.kastatic.org/ka-youtube-converted/TLUZnCvuGBk.mp4/TLUZnCvuGBk.mp4 791 Conservation of energy 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 2026-04-27T10:10:46.754795089Z Learn and try: Conservation of energy Apply your knowledge of kinetic and potential energy to investigate energy transfers and transformations. Understand the law of conservation of energy and how it applies in different scenarios. article https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:conservation-fo-energy/v/transformation-of-energy-ur 2025-08-07T23:35:51.501752344Z Transformation of energy Created by Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Transformation of energy Created by Khan Academy https://cdn.kastatic.org/ka-youtube-converted/Ol_8Z1loQp0.mp4/Ol_8Z1loQp0.mp4 135 Conservation of energy https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:energy-work-and-power/x0e04e0cb682fb793:conservation-fo-energy/e/conversion-of-energy 2026-04-07T23:17:37.123726494Z Conversion of energy Let's solve some questions on conversion of energy Vibhor Pandey exercise