Question

a rocket is launched 85 miles per hour what is the measurement in feet per second

Answer 1

5280 feet per mile

1hour=60mins
1min=60seconds
1hour=60*60=3600 seconds


85 miles per 1 hour

85 miles times 5280=448800 feet

1 hour=3600 seconds

85mph=448800ft/3600sec=124 and 2/3 feet per second