Question

the unit of speed or velocity is written as​

Answer 1

Answer:

metre per second

The SI unit of speed is the metre per second (m/s), but the most common unit of speed in everyday usage is the kilometre per hour (km/h) or, in the US and the UK, miles per hour (mph).

Explanation:

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Answer 2

Answer:

meter per second

Explanation:

Speed and velocity are both measured using the same units. The SI unit of distance and displacement is the meter. The SI unit of time is the second. The SI unit of speed and velocity is the ratio of two — the meter per second .