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If an object is dropped from a height of 144 feet, the function h(t)=-16t^2 + 144 gives the height of the object after t seconds. When will the object hit the ground?

Mathematics
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A. 9 s B. 6 s C. 1.5 s D. 3 s
h(t)=-16t^2 + 144 is this formula right?
Yes thats the right formula @febylailani

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Other answers:

Here, you can set it equal to zero and factor.
I think the answer is D
You'd be correct.
Thanks!
oooh.. sorry, he's 1st xD

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