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) 3.8 m/s.
B) 3.0 m/s.
C) 3.4 m/s.
D) 4.1 m/s.
E) 4.5 m/s.

Question

Quizplus · Accepted Answer

8.4 miles per hour = 8.4 * 5280 ft / hour = 8.4 * 5280 * 12 in / hour = 8.4 * 5280 * 12 * 2.54 cm / hour = 134649.6 cm / hour = 134649.6 cm / 3600 s = 37.4 cm / s = 0.374 m / s

In Addition to 1 M = 39