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posted by Arria on Thursday, February 14, 2013 at 9:28am.
You drop an object from atop a building and it takes 7.20-sec before it hits the ground. Assume that there is no air resistance, how tall is this building?
h = Vo*t + 0.5g*t^2 h = 0 + 4.9*(7.2)^2 = 254 m
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