Preparation Staff asked 4 weeks ago The SI unit of speed is meters per second (m/s). Speed is a measure of how quickly an object moves, and it is defined as the distance traveled by an object in a given amount of time. Speed is a scalar quantity, meaning it has only magnitude and no direction.
The unit of speed, meters per second (m/s), is derived from the two fundamental quantities: length (measured in meters) and time (measured in seconds). Therefore, the unit of speed is a derived unit, representing the distance traveled per unit of time.
For example, if a car travels a distance of 100 meters in 10 seconds, its speed is 10 meters per second (m/s). In this case, the magnitude of speed tells us how much distance the car covers in each second.
Speed is commonly used in various fields, such as physics, engineering, transportation, and sports. It helps describe the motion of objects and is used to calculate other related quantities, such as velocity (which is speed in a specific direction) and acceleration.
In everyday life, speed is often measured in kilometers per hour (km/h), especially in vehicles. However, in scientific contexts, the standard unit remains meters per second (m/s), which is consistent with the SI system. The use of SI units ensures precision and consistency when discussing speed across different systems and applications.
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