Question

The “strike zone" or distance across home plate is 17 inches. Determine how

long a baseball pitched at 90 mph is in the strike zone. *

Answer 1

0.0107 they where right

Answer 2

0.0107 seconds

Explanation:

The time the ball is in the strike zone will be the time it takes to cross the 17 inches across the home plate.

Distance the ball will travel = 17 inches

Speed of the ball = 90 mph =
`90* (63360)/(3600)=1584\ \text{inches/s}`

Time is given by

`\text{Time}=\frac{\text{Distance}}{\text{Speed}}\\ =(17)/(1584)\\ =0.0107\ \text{s}`

Time the ball is in the strike zone is 0.0107 seconds.