Question

Write true or false :
The S.I. unit of speed is $m{s}^{-1}$.

Answer 1

The distance covered or travelled by a body in unit time is called the speed of a body.

$Speed=\frac{Distancetravelled}{Timetaken}$

In the S.I. system, distance is measured in metre$\left(m\right)$ and time measured in second$\left(s\right)$, so the S.I. unit of speed is $metre/second\left(m{s}^{-1}\right)$.

Hence the given statement is $\text{True}$.