Question

Define speed. Write its SI unit.

Answer 1

1. Speed is defined as the rate of change of distance with time.
2. Thus, the SI unit of speed is given as the combination of the basic unit of distance and the basic unit of time.
3. $\mathrm{Speed}=\frac{\mathrm{Distance}}{\mathrm{Time}}=\frac{\mathrm{Meter}}{\mathrm{Second}}$
4. The SI unit of speed is $m/s$.