The pitcher for the Robins throws a baseball at 90.0 miles per hour. The pitcher on the Bluebirds throws a baseball 121 feet per second. Which pitcher throws a baseball faster?

1 mile = 5280 ft ... so 90 miles = 90 * 5280 = 475200 ft

60 seconds in 1 minute ... and 60 minutes in 1 hr = 60 * 60 = 3600 sec/hr

475200/3600 = 132 ft per second ... so 90 miles per hr = 132 ft per second.

so the pitcher on the Robins throws faster at 132 ft/sec compared to the Bluebirds pitcher who throws at 121 ft/sec