Question

Little Frufru is standing at the top of a lighthouse. She is 96 feet above the ocean. She tosses a ball into the air. The height, h, of the ball after x
seconds is given by
h = - 16t^2+64 + 96. How many seconds does it take to reach the maximum height

Answer 1

Answer:

4.62 seconds

Step-by-step explanation:

Time is displacement divided by average speed.

Average speed w = (u+v)/2 = (64-83.9)/2 ft/s

Time t = s /w

t = -46(2/(64-83.9) = -92/-19.9 = 4.62 seconds.