There are 5,280 feet in a mile, and 3,600 seconds in an hour. We want to bring both of these down to the same measurements. There are 475,200 feet in 90 miles. Divide 475,200 by 3,600. The result is 132, which is larger than 121. The pitcher for the robins throws faster.
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?