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If an object is dropped from a height of 144 ft, the function h(t) = –16t² + 144 gives the height of the object after t seconds. When will the object hit the ground?

1.5 s
3 s
6 s
9 s
I think it is 3s...?

3 answers

Yes, because that will give you a value of 0 height in 3 s.

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