Q. A tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an initial speed of 110 feet per second. After how many seconds does the ball attain its maximum height?
A) 3.44 sec
B) 2.87 sec
C) 5.41 sec
D) 4.65 sec
✔ Correct Answer: 3.44 sec
Exam Insight
Using the formula t = v/g, where v = 110 ft/s and g = 32.2 ft/s², the ball attains its maximum height in approximately 3.42 seconds.