You can
put this solution on YOUR website!First, let's convert the denominator of "hour" to "seconds":
72 miles 1 hour 1 min
--------- x ------ x ------
hour 60 min 60 sec
.
Note: notice how the like-units cancel leaving:
72 miles
---------
36 sec
.
Now, let's convert the numerator of "miles" to "meters":
72 mile 5280 ft
-------- x --------- x ------------
36 sec 1 mile 1 ft
.
Again, notice how the units cancel leaving:
(72*5280*0.3048) meters0.3048 meter
-----------------------
36 sec
Resulting in:
115872.768 meters
------------------
36 sec
Finally, we get:
3218.688 meters/sec
