Hi there
This is a smart question, so let me show you the trick of it.
176 feet per second
but we dont know per minute
We know that 60 seconds = 1 minute
with that information we can solve it
If 176 .......... 1 second
x .............. 60 second
x = 176 * 60
x= 10560
He is falling 10560 feet per minute