Question

Rupert drove home at an average rate of 58 miles per hour. Find his rate in feet per seconds.

Answer 1

how many feet in 58 miles..?

Answer 2

when you get the answer divide by 60

to get the speed as feet per minute

then divide by 60 again to get feet per second

hope it helps

Answer 3

Multiply by one (1)

\(\dfrac{58\;mile}{hour}\cdot\dfrac{5280\;ft}{1\;mile}\cdot\dfrac{1\;hour}{3600\;sec}\)

Answer 4

\[58 \frac{miles}{hour}\] since 1mile = 5280 feet and 1hour = 60² seconds you just replace one for the other since they are equal: \[58 \frac{mile}{hour} = 58 \frac{5280 feet}{60^{2} seconds} = \frac{58*5280}{3600}\frac{feet}{seconds}\] which is 85.06ft/s