Question

Arianna kicks a soccer ball off the ground and into the air with an initial velocity of 42 feet per second. Assume the starting height of the ball is 0 feet. Approximately what maximum height does the soccer ball reach? Hint: Use H(t) = -16t2 + vt + s. 1.3 ft 2.6 ft 26.0 ft 27.6 ft

Answer 1

The answer is 27.6

Option D

Explanation:

Answer 2

h(t) = -16t^2 +42t = -16t(t -2.625)
The maximum height will be reached at t=1.3125. It will be
h(1.3125) = 16*1.3125^2 ≈ 27.6 Which corresponding to the 4th selection