Question

a rino can run at speeds about 28 miles per hour. what is that speed in feet per secsec, to the nearest whole number? (Remember there are 5280 feet in a mile, 60 seconds in a minute, and 60 minutes in a hour.)

Answer 1

Remark

You can use  a method called unit analysis to solve this problem. You will use it many times in your education later on.

Solve

$\dfrac{28 mile}{hour} *\dfrac{5280 feet}{mile}*\dfrac{1 hour}{60 min}*\dfrac{1 min}{60 sec}$

Now sort out the numbers  in the numerator and those in the denominator and multiply them together.

Numerator 28 * 5280 * 1 * 1 = 147840

Denominator: 60 * 60 = 3600

Now divide the numerator by denominator

Answer = 147840 / 3600 = 41.1 Feet / second

28 miles per hour = 41.1 feet / second