https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:kinematics/x0e04e0cb682fb793:speed-and-velocity/v/speed-and-velocity 2025-07-01T10:10:08.145512912Z Speed and velocity An object's average speed is the distance it travels, divided by the time taken to travel that distance. An object's motion can be analyzed by recording distance and time data in a table or graph. The slope of a distance vs. time graph is the object's speed. Velocity is speed with direction of motion included. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/09bde913-3d37-440e-a2b1-21655e4f6dca_1280_720_base.png Speed and velocity An object's average speed is the distance it travels, divided by the time taken to travel that distance. An object's motion can be analyzed by recording distance and time data in a table or graph. The slope of a distance vs. time graph is the object's speed. Velocity is speed with direction of motion included. https://cdn.kastatic.org/ka-youtube-converted/W6Ar0ls6tVA.mp4/W6Ar0ls6tVA.mp4 471 Describing motion https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:kinematics/x0e04e0cb682fb793:acceleration/v/ms-acceleration 2025-07-01T10:10:08.145512912Z Acceleration 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. Mahesh Shenoy video https://cdn.kastatic.org/ka_thumbnails_cache/23c403b1-dc8f-469a-867f-f825247bc67b_1280_720_base.png Acceleration 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. https://cdn.kastatic.org/ka-youtube-converted/gWaI-mzn69c.mp4/gWaI-mzn69c.mp4 453 Describing motion https://www.khanacademy.org/science/cambridge-o-level-physics-cie/x0e04e0cb682fb793:kinematics/x0e04e0cb682fb793:speed-and-velocity/a/describing-motion 2026-06-30T17:40:47.272317428Z Learn and try: Describing motion Learn how to describe where an object is located and how it's moving. Analyze motion data using tables and graphs. Explore why reference frames and units are important when describing motion. article https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:motion-and-forces/x1baed5db7c1bb50b:motion/e/understand-representing-motion 2026-05-01T13:40:34.883034315Z Understand: Motion Check your understanding of motion this set of free, standards-aligned practice questions. Khan Academy exercise https://www.khanacademy.org/science/ms-physics/x1baed5db7c1bb50b:motion-and-forces/x1baed5db7c1bb50b:motion/e/apply-motion 2026-05-01T13:40:34.883034315Z Apply: Motion Apply your knowledge of motion in this set of free, standards-aligned practice questions. Molly Sauder exercise