Express the speed of $100 k m / h r$ in $c m / s$ .

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Solution

Step 1: Given data
Speed in $k m / h r$ = $100 k m / h r$
Step 2: Solution
We know that $1 k m = 1000 m$ and $1 m = 100 c m$ , thus $1 k m$ will be equal to $10^{5} c m$ .
We also know that $1 h r = 60 m i n$ and $1 m i n = 60 s e c$ , thus $1 h r = 60 \times 60 s e c$ or $1 h r = 3600 s e c$ .
Now let us convert $100 k m / h r$ in $c m / s$ with the help of the above-mentioned information:
$100 k m / h r = 100 \times (\frac{10^{5}}{3600}) c m / s 100 k m / h r = 2777.78 c m / s$
Thus, the speed in $c m / s$ will be $2777.78 c m / s$ .

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