$1 k m / h r = . . . . . . . . . . . . . . . . . . . m / s e c$

\frac{18}{5}

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\frac{5}{18}

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\frac{15}{18}

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\frac{18}{15}

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Solution

The correct option is B $\frac{5}{18}$
We know that,
$1 k m = 1000 m$
$1 h o u r = 3600 s$
$1 k m / h r$ is converted into $m / s e c$ .
So,
$1 k m / h r = \frac{1000}{3600} m sec$
$1 k m / h r = \frac{5}{18} m / s e c$
So, we can say that, $1 k m / h r = \frac{5}{18} m / s$ .
Hence, Option B is the correct.

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