If an object is dropped from a height of 116 feet, the function h (t) = - 16t^2+116 gives the height after t seconds. When will the object hit the ground?

Question

Mathematics

Isiah Love

2 July, 19:26

If an object is dropped from a height of 116 feet, the function h (t) = - 16t^2+116 gives the height after t seconds. When will the object hit the ground?

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Answers (1)

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Joselyn Strickland · Answer 1

Let h (t) = 0 (because when it reaches the ground h=0)

0=-16t^2+116

16t^2=116

divide both sides by 16

t^2 = 7.25

square root both sides to find t

t=2.69sec