Question

HELP!! MEDAL!!
Convert 3.5 meters/second to kilometers/hour.
(please show step-by-step)

Answer 1

\[\large 3.5 \frac{m}{s}\]

We know there are 1000m in 1 km so

\[\large 3.5 \frac{\cancel{m}}{s} \times \frac{1km}{1000\cancel{m}}\] Now notice the 'm' will cancel

So and now we also know there are 3600 seconds in 1 hour...so

\[\large 3.5\frac{\cancel{m}}{\cancel{s}} \times \frac{1km}{1000\cancel{m}} \times \frac{3600\cancel{s}}{1h}\]

So finally we have

\[\large (3.5 \times \frac{1}{1000} \times 3600)\frac{km}{h}\]