An object is dropped off a building that is 144 feet tall. After how many seconds does the object hit the ground? (s = 16t 2) 3 seconds 4 seconds 9 seconds
An object is dropped off a building that is 144 feet tall. [ The object hit the ground after 3 seconds. Solution: h(t) = -16t2 + 144; h(1) = -16(12) + 144 = 128 ft; h(2) = -16(22) + 144 = 80 ft; h(2) - h(1) = 80 - 128 = -48 ft; It fell 48 ft between t = 1 and t = 2 seconds.; 0 = -16t2 + 144; t = (144/16) s = 3s. ]
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Updated 5/15/2020 2:34:06 PM
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Deleted by marie2061 [5/15/2020 2:38:35 PM]

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