Question

what is speed ? write unit of speed​

Answer 1

Speed has the dimensions of distance divided by time. The SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour. For air and marine travel the knot is commonly used.

SI unit: m/s, m s−1

Common symbols: v

Dimension: L T-1

Answer 2

speed is equal to d/t

the distance travelled in unit time is called speed

km per hour

meter per second
The SI unit of time is the second. The SI unit of speed and velocity is the ratio of two — the meter persecond. Speed - It is simply defined as the rate at which an object covers a given distance in a particular period of time. It is a scalar quantity
The SI unit of time is the second. The SI unit of speed and velocity is the ratio of two — the meter per second. Speed - It is simply defined as the rate at which an object covers a given distance in a particular period of time. It is a scalar quantity