The SI unit of velocity is the metre per second (m/s).
Velocity is a vector quantity that describes the rate of change of an object's position with respect to time, as well as the direction of that change. Since it involves both distance and time, its unit is derived from the SI units for those quantities.
Here's a breakdown:
- Distance: The base SI unit for distance (or displacement) is the metre (m).
- Time: The base SI unit for time is the second (s).
- Velocity: Velocity is calculated as distance divided by time (v = d/t). Therefore, the SI unit for velocity is metre/second, or m/s.
It's important to note that while kilometers per hour (km/h) is a commonly used unit for speed (the magnitude of velocity), it is not the SI unit. To convert from km/h to m/s, you would divide by 3.6.
