Speed
The rate of change of distance.
Speed is the distance traveled by an object divided by the time taken to cover that distance. It is a scalar quantity that represents how fast an object is moving. In physics, the standard unit of speed is meters per second (m/s). For example, if a car travels 100 meters in 10 seconds, its average speed is 10 meters per second.
Speed can also be expressed in different units depending on the context. For example, in everyday life, we often use kilometers per hour (km/h) or miles per hour (mph) to describe how fast a vehicle is moving. In scientific experiments, researchers might use other units, such as feet per second (ft/s) or miles per minute (mi/min).
It is important to note that speed is different from velocity, which also takes into account the direction of motion. For example, a car that travels 100 meters west in 10 seconds has the same speed as a car that travels 100 meters east in 10 seconds, but they have different velocities because they are moving in opposite directions.
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