Conversion of mi/h to feet per minute

Question

Convert a speed of 219 mi/h to units of feet per minute. Also, show the unit analysis by dragging components into the unit-factor slots.

Answer 1

219 mph = 321.2 feet per second

one mile = 5280 feet

one hour = 60(60) seconds = 3600 seconds

1 mile/hour = 5280/3600= 528/360 = 1.4666... ft/sec

219 mph = 219(528)/360 = 321.2 ft/sec