Speed is the measure of how quickly an object moves from one place to another. It is calculated by dividing the distance traveled by the time it takes to travel that distance. For example, if a car travels 60 miles in one hour, its speed is 60 miles per hour (mph). Speed can vary depending on the object and the conditions, such as terrain or weather. In physics, speed is a scalar quantity, meaning it only has magnitude and no direction. It is different from velocity, which includes both speed and direction. Common units for measuring speed include meters per second (m/s) and kilometers per hour (km/h). Understanding speed is essential in various fields, including transportation, sports, and engineering.