Question

A pronghorn antelope can run at speeds of about 59 miles per hour. What is that speed in feet per second, to the nearest whole number? (Remember, there are 5280 feet in a mile, 60 seconds in a minute, and 60 minutes in an hour.)

A. 179 feet per second

B. 89 feet per second

C. 29 feet per second

D. 87 feet per second

Answer 1

D. 87 feet per second

Answer 2

To do this we need to first multiply by the number of feet in a mile to get:
311520 feet per hour
Then we divide by 3600 to get this into feet per second:
86.53333... feet per second

Now rounding this we get 87 feet per second, the answer is D.