A tennis ball is hit upward with a velocity of 48 feet per second. Use h(x) = -16x2 + 48x + 400 where h(t) is the height of the ball after x seconds. Ignoring the height of the tennis player,
21. How long does it take the ball to hit the ground?
a. 1.5 sec
b. 8 sec
c. 6.72 sec
d. 436 sec
22. What is the maximum height reached by the ball? a. 1.5 ft
b. 8 ft
c. 6.72 ft
d. 436 ft
23. At what time does the ball reach the maximum height?
a. 1.5 sec
b. 8 ft
C. 6.72 ft
d. 436 ft
OCT
21