Question

Use the following unit fractions to express 180 miles per hour in feet per second

5280 ft/ 1 mi, 60 min/ 1 hr , and 60 sec/1 min
Problem:
180 mi/hr=blank ft/sec

Answer 1

264 ft/sec

Explanation:

180 miles / hour

(180×5280) ÷ (1×60×60)

950400 ÷ 3600

264 ft/sec

Answer 2

264 ft/sec

Explanation:

We need to use the conversion factors

5280 ft/ 1 mi, 60 min/ 1 hr , and 60 sec/1 min

180 miles 1 hour 1 min 5280 ft

----------------- * ----------------- * ------------ * ---------------

hour 60 minutes 60 sec 1 miles

The hours, minutes and miles cancel are we are left with ft/sec

180 *5280 ft

----------------- * -----------------

60*60 sec

264 ft/sec