The following conversion equivalents are given:
1.0 mile = 5280 ft 1.0 ft = 12 in 1 m = 39.37 in
1.0 hour = 60 min 1.0 min = 60 s
If a deer runs at 4.7 mi/h,its speed,in meters per second,is closest to
A)2.1 m/s.
B)1.7 m/s.
C)1.9 m/s.
D)2.3 m/s.
E)2.5 m/s.

Question

Quizplus · Accepted Answer

First, convert the speed from miles per hour to meters per second. $4.7 \, \text{mi/h} = 4.7 \times 5280 \, \text{ft/h} = 24816 \, \text{ft/h}$. Convert feet to meters: $24816 \, \text{ft} \times \frac{1 \, \text{m}}{39.37 \, \text{in}} \times \frac{12 \, \text{in}}{1 \, \text{ft}} = 7534.8 \, \text{m/h}$. Convert hours to seconds: $7534.8 \, \text{m/h} \times \frac{1 \, \text{h}}{3600 \, \text{s}} \approx 2.1 \, \text{m/s}$.

The Following Conversion Equivalents Are Given