Acceleration | Middle school physics | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/science/ms-physics Want to explore more? Check out the full middle school physics playlist here: https://www.youtube.com/playlist?list=PLSQl0a2vh4HC-daPugvP8kL_zuE3u_3Zr Acceleration is change in velocity. If an object's speed and/or direction is changing, it is accelerating. If an object is speeding up, its velocity and acceleration are in the same direction. If an object is slowing down, its velocity and acceleration are in opposite directions. If neither an object's speed or direction are changing, it's moving at constant velocity and its acceleration is zero. Sections: 00:00 - Intro 01:27 - What is acceleration? 04:28 - Predict direction of acceleration 05:56 - Acceleration with constant speed 06:52 - Summary ------------------ 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