Question

A tennis ball travels at speed of 120 miles per hour.convert this rate to feet per second

Answer 1

$120\frac{mile}{hour}\\\\ 1 \ mile=5280\ feet\\ 1\ hour=3600\ seconds\\\\ 120\frac{mile}{hour}=120*\frac{5280}{3600}=\frac{120*5280}{3600}=\frac{633600}{3600}=176\frac{feet}{second}\\\\ \boxed{120\frac{mile}{hour}=176\frac{feet}{second}}$