Convert the following speeds from $K m / h$ to $m / s$
$144 K m / h$

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Solution

As we know,
$1 K m = 1000 m 1 h = 60 m i n u t e s$
$= 60 \times 60 s e c o n d s = 3600 s$
now,
$144 K m / h = \frac{144 \times 1000}{3600} \frac{m}{s}$
$= \frac{1200}{30} m / s = 40 m / s$
Hence $144 K m / h$ $= 40 m / s$

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