Convert the following speeds from $m / s$ to $K m / h$ .
$125 m / s$

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Solution

As we know,
$1 m = \frac{1}{1000} K m 1 s = \frac{1}{3600} h$
So,
$125 m / s = \frac{125 \times \frac{1}{1000}}{\frac{1}{3600}} \frac{k m}{h}$
$= \frac{125}{1000} \times 3600 = 450 K m / h$
Hence $125 m / s = 450 k m / h$ .

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