Velocity is the speed of an object plus its direction of travel. Speed measures how fast an object covers distance, and is measured in units such as miles per hour or meters per second. An example of speed is 55 miles per hour, while an example of velocity is 55 miles per hour heading west. In everyday nonscientific contexts, the words “speed” and “velocity” are typically used synonymously, but in physics, the inclusion of direction when measuring velocity is a crucial distinction.... więcej

Salem Press Encyclopedia of Science, 2022. 2p.