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Chapter 9: Problem 89
You jog 500 meters in a given period of time. The next day, you jog 500 yards over the same time period. On which day was your speed faster? Explain your answer.
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Use \(1 \mathrm{mi} \approx 1.6 \mathrm{~km}\) to solve \(-\). Express 104 kilometers per hour in miles per hour.
If you could select any place in the world, where would you like to live? Look up the population and area of your ideal place, and compute its population density. Group members should share places to live and population densities. What trend, if any, does the group observe?
Use the following English and metric equivalents, along with dimensional analysis, to convert the given measurement to the unit indicated.English and Metric Equivalents$$\begin{aligned}&1 \text { in. }=2.54 \mathrm{~cm} \\\&1 \mathrm{ft}=30.48 \mathrm{~cm} \\\&1 \mathrm{yd} \approx 0.9 \mathrm{~m} \\\&1 \mathrm{mi} \approx 1.6 \mathrm{~km}\end{aligned}$$ \(14 \mathrm{~cm}\) to in.
Use unit fractions to express 100 miles per hour in feet per second.
In Exercises 53-54, use the unit fractions \(\frac{5280 \mathrm{ft}}{1 \mathrm{mi}}, \frac{12 \mathrm{in} .}{1 \mathrm{ft}}\), and \(\frac{2.54 \mathrm{~cm}}{1 \mathrm{in} .}\). Convert \(30 \mathrm{mi}\) to \(\mathrm{km}\).
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