# If you run 120 feet in 4. 8 seconds how many miles per hour would you be running?

Jun 4, 2014

17 miles per hours

To solve the problem:

$\frac{120 f e e t}{4.8 \sec o n \mathrm{ds}} = 25 f e e t p e r \sec o n d$

first figure out the number of feet per second.

$\frac{25 f e e t p e r \sec o n d}{5280 f e e t} = 0.00473484848 \ldots m p s$

next use the feet per second divided by the number of feet in a mile

$\left(0.00473484848 \ldots m p s\right) \cdot \left(3600 \sec o n \mathrm{ds}\right) = 17.04545454 \ldots m p h$

and to get the answer, take the mile per second and times that by the length of time (in this case number of seconds in an hour.)