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OpenStudy (anonymous):
A falling object has the equation h2 = -16t2+h1, where h2 is the height above the ground at time (t) and h1 is the original height of the object above the ground. If a box of building materials falls off a 36 ft building, how many seconds will you have to get out of the way? Hint: When the materials hit the ground, the distance (h2) is 0.
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