https://www.khanacademy.org/science/ap-physics-c-mechanics/x077f5683c1428fac:work-energy-and-power/x077f5683c1428fac:translational-kinetic-energy-and-work/a/what-is-kinetic-energy 2026-05-01T14:10:52.97313295Z Learn and try: Translational kinetic energy and work Learn about translational kinetic energy and how it's related to work through the work-kinetic energy theorem. article https://www.khanacademy.org/science/ap-physics-c-mechanics/x077f5683c1428fac:work-energy-and-power/x077f5683c1428fac:translational-kinetic-energy-and-work/e/work-and-mechanical-energy 2026-06-19T17:56:42.733541135Z Translational kinetic energy and work Check your understanding of work and kinetic energy in this set of free practice questions. exercise https://www.khanacademy.org/science/ap-physics-c-mechanics/x077f5683c1428fac:work-energy-and-power/x077f5683c1428fac:translational-kinetic-energy-and-work/e/work-graphs-ap-physics-1 2026-06-19T17:56:42.733541135Z Force vs. displacement graphs Practice working with force vs. displacement graphs. Sean Boston exercise https://www.khanacademy.org/science/ap-physics-c-mechanics/x077f5683c1428fac:work-energy-and-power/x077f5683c1428fac:translational-kinetic-energy-and-work/v/work-done-by-forces-part-1 2026-03-26T16:59:18.375716261Z Work done by forces (part 1) Work is the amount of energy transferred into or out of a system by a force exerted on that system over a distance. Work is a scalar quantity that may be positive, negative, or zero. Only the component of the force exerted on a system that is parallel to the displacement of the point of application of the force will change the system’s total energy. The work-energy theorem states that the change in an object’s kinetic energy is equal to the sum of the work (net work) being done by all forces exerted on the object. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/24044a18-0130-4269-9852-3ed86409e12d_1280_720_base.png Work done by forces (part 1) Work is the amount of energy transferred into or out of a system by a force exerted on that system over a distance. Work is a scalar quantity that may be positive, negative, or zero. Only the component of the force exerted on a system that is parallel to the displacement of the point of application of the force will change the system’s total energy. The work-energy theorem states that the change in an object’s kinetic energy is equal to the sum of the work (net work) being done by all forces exerted on the object. https://cdn.kastatic.org/ka-youtube-converted/Qf8hIBrsWZI.mp4/Qf8hIBrsWZI.mp4 752 Translational kinetic energy and work https://www.khanacademy.org/science/ap-physics-c-mechanics/x077f5683c1428fac:work-energy-and-power/x077f5683c1428fac:translational-kinetic-energy-and-work/v/work-done-by-forces-part-2 2026-03-26T16:59:18.375716261Z Work done by forces (part 2) If a force varies with position, the work done by that force cannot generally be calculated as a simple product. Instead, an integral is required to sum the infinitesimal work contributions along the object’s path. The work done by such a force is given by a line integral, evaluated along the path from the object’s initial to final position. For one-dimensional motion, work is equal to the area under the curve of the parallel component of force versus position. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/432df83d-728d-4a1a-982b-231d0d8f3583_1280_720_base.png Work done by forces (part 2) If a force varies with position, the work done by that force cannot generally be calculated as a simple product. Instead, an integral is required to sum the infinitesimal work contributions along the object’s path. The work done by such a force is given by a line integral, evaluated along the path from the object’s initial to final position. For one-dimensional motion, work is equal to the area under the curve of the parallel component of force versus position. https://cdn.kastatic.org/ka-youtube-converted/gS2yei7d0_E.mp4/gS2yei7d0_E.mp4 1151 Translational kinetic energy and work https://www.khanacademy.org/science/ap-physics-c-mechanics/x077f5683c1428fac:work-energy-and-power/x077f5683c1428fac:translational-kinetic-energy-and-work/e/work-done-by-forces 2026-06-16T19:28:41.750798603Z Work done by forces Apply your knowledge of the work done by forces in this set of free practice questions. Emily Cizmas exercise