Answer:
59 feet per second.
Step-by-step explanation:
Firstly, we need to convert miles into feet and hours into seconds.
We know that there are 5280 feet in a mile.
To convert hours into seconds we multiply how many minutes are in an hour by how many seconds there are in a minute (60x60) to get 3600.
We multiply 5280 by 40 to get 211200 feet per hour
Because of the word "PER" we know that this is a divison problem.
211200 divided by 3600 is 58.66 repeating. Rounded to the nearest whole number makes it 59 feet per second.
