Find the speed in feet per second of a pitch going 84 mph.

I am needing to find the solution by writing down what questions I need to ask to answer it and then show the work.
Example: How many feet per second is in 1 mph? 1.46666667

You can find the answer by asking two questions:

1) How many feet are in a mile?

There are 5,280 feet in a mile. That means that a speed of 84 mph is the same as (84 x 5280) = 443,520 feet per hour.

2) How many seconds are in an hour?

There are 3,600 seconds in an hour. This means that the speed 443,520 feet per hour is the same as (443520 / 3600) = 123.2 feet per second

Simple,

Convert mph to miles per second . To do this divide by 3600 (60 x 60)

Then multiply by the number of feet in a mile (5280)

Or you've already found out how many feet per second are in 1 mph, so just multiply that by 84 to get your answer.

also if you were to do 5280/3600 you would get the same answer

How do you change miles into feet? Multiply by 5280
How do you change hours into seconds? Multiply by 3600

84 miles = 84 * 5280 feet = 443520 feet
84 mph = 443520 feet in one hour
443520 feet in one hour = 443520/3600 feet in 1 second = 123.2 feet per second

REMEMBER 15 mph = 22 ft/sec
1 mph = 22/15 ft/sec = 1 7/15 ft/sec ANSWER

60 mph = 88 ft/sec
84 mph • 88 ft/sec/60 mph = 123.2 ft/sec