Question

A car is traveling at 55 mi/h. What is the car’s speed in feet per second?

Answer 1

1 mile = 5280 feet 
so 55 miles = 55*5280 = 290,400ft 
there are 60 seconds in 1 minute and 60 minutes in 1 hour 
so 1 hour = 60*60 = 3600 seconds 

55mile/1hour = 290400ft/3600 seconds = 80.67ft per second