SOLUTION: If a car is traveling at 40 miles per hour on a country highway, what is its spped in feet per second?

Question 219606: If a car is traveling at 40 miles per hour on a country highway, what is its spped in feet per second?
Found 2 solutions by nerdybill, Earlsdon:
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
It is a "units" conversion problem...
.
40 miles per hour can be written as a fraction:
.
40 miles
--------
1 hour
.
Now, we multiply by equivalent units until we get our desired units.
.
40 miles 1 hour 1 min 40 miles
-------- x -------- x ------ = ---------
1 hour 60 mins 60 sec 3600 sec
.
Now, we convert the miles:
.
40 miles 5280 feet (40*5280) feet
--------- x ----------- = --------------
3600 sec 1 mile 3600 sec
.
(40*5280) feet
-------------- = 58.67 feet/sec
3600 sec

Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
40 mph can be expressed:
miles per hour. Change the 40 miles to feet. (1 mile = 5280 feet)1 hour to seconds (1 hour = 60*60 seconds) and.
feet per second. Evaluate.
feet per second.
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