Answer:
 
 
 
Explanation:
We are given speed in miles per hour
We have to convert it into foots per minute.

The conversion can be done in the following manner:
We know that 
1 mile = 5280 foot
Also,
1 hour = 60 minutes.
Thus, the conversion takes place as:

Thus, the speed in foot per minute is 57288 foots per minute.