In addition to 1 m = 39.37 in., the following exact conversion equivalents are given: 1 mile = 5280 ft , 1 ft = 12 in , 1 hour = 60 min, and 1 min = 60 s. If a particle has a velocity of 8.4
Miles per hour,its velocity, in m/s, is closest to
A) 3.0 m/s.
B) 3.8 m/s.
C) 4.5 m/s.
D) 4.1 m/s.
E) 3.4 m/s.

Question

Quizplus · Accepted Answer

To convert 8.4 miles per hour to meters per second, use the given conversion factors: $8.4 \, \text{miles/hour} \times \frac{5280 \, \text{feet}}{1 \, \text{mile}} \times \frac{12 \, \text{inches}}{1 \, \text{foot}} \times \frac{1 \, \text{meter}}{39.37 \, \text{inches}} \times \frac{1 \, \text{hour}}{3600 \, \text{seconds}}$. This calculation results in approximately 3.8 m/s.

In Addition to 1 M = 39