Motion, forces, and energy | Physics | Khan Academy - Kinetic energy | Physics | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/science/highschool-physics/x6679aa2c65c01e53:energy/x6679aa2c65c01e53:kinetic-and-potential-energy/v/kinetic_energy Want to explore more? Check out the full energy & work playlist here: https://www.youtube.com/playlist?list=PLSQl0a2vh4HA528Zyvlu2giom7XkHj_OM Energy is a scalar quantity measured in joules (J). One form is kinetic energy, which is energy due to motion. An object's kinetic energy depends on its mass and its speed. Kinetic energy is defined mathematically as K=(1/2)mv^2. Any moving macroscopic object possesses kinetic energy. The particles in matter also possess kinetic energy, leading to macroscopic energy effects like thermal energy and sound. Sections: 00:00 - Intro 00:09 - Properties of energy 01:09 - Forms of energy (kinetic, potential, light) 02:33 - Energy is conserved 04:04 - Calculating kinetic energy of a baseball 06:43 - Calculating speed of a satellite 10:30 - Macroscopic displays of microscopic kinetic energy ------------------ Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc