Answer
It takes about 0.45 seconds for the ball to travel 60 feet.
Work Step by Step
90 miles/hour $\times$ 5280 ft/mile= 475200 feet traveled by ball per hour
475200 feet/hour $\div$ 60 $\div$ 60= 132 feet traveled per second
132 ft/sec = 60 ft/x sec
132x=60
x= $\frac{132}{60}$
x= 0.454545
