Speed Unit
1. The problem asks: What is the unit for speed?
2. Speed is defined as the distance traveled per unit of time.
3. The formula for speed is $$\text{speed} = \frac{\text{distance}}{\text{time}}$$.
4. The standard unit for distance is meters (m), and the standard unit for time is seconds (s).
5. Therefore, the standard unit for speed is meters per second, written as $$\text{m/s}$$.
6. In everyday contexts, speed can also be expressed in kilometers per hour (km/h) or miles per hour (mph), but the SI unit is meters per second.
7. To summarize, speed measures how fast an object moves and is expressed as distance divided by time, with the SI unit being meters per second.