A car moves at a speed of 68 km/h. How many meters will it cover in 5 minutes? (correct to the nearest whole number)
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 5667
Distance = speed × time, with the units made to agree first: the speed is per hour, so 5 minutes is written in hours, and the kilometres are then turned into metres.
Time \(\displaystyle =\frac{5}{60}\,\mathrm{h}=\frac{1}{12}\,\mathrm{h}\)
Distance \(\displaystyle =68\times\frac{1}{12}=\frac{17}{3}\,\mathrm{km}\)
In metres: \(\displaystyle \frac{17}{3}\times1000=5666.67\approx5667\,\mathrm{m}\)