Which speed is greater: $30 m / s$ or $30 m / s o r 30 k m / h ?$ $30 k m / h$ ?

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Solution

Find which speed is greater:
Given,
$30 m / s o r 30 k m / h ?$
The units of the above two speeds must be the same in order to compare them. Let's make all of the units the same size.
$1 m / s = 0.001 k m / (1 / 3600) h o u r$
It means,
$1 m / s = 3.6 k m / h$
$∴ 30 m / s = 30 x 3.6 k m / h = 108 k m / h$
$∴ 108 k m / h > 30 k m / h$
As a result, $30 m / s$ is faster than $30 k m / h .$

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