Discussion
Express a speed of 36 kmph in meters per second?
Answer: A
\[ 1 \text{ km/hr} = \frac{1000 \text{ m}}{3600 \text{ s}} = \frac{5}{18} \text{ m/s} \]
\[ 36 \times \frac{5}{18} = 10 \text{ m/s} \]
The factor \( \tfrac{5}{18} \) converts kmph to m/s, and its reciprocal \( \tfrac{18}{5} \) goes the other way.
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