Posted by chanz11 on Wednesday, April 18, 2012 at 4:44am.
V^2 = Vo^2 + 2g*h.
V^2 = (4.5)^2 + 19.6*12.5 = 265.25.
V = 16.29 m/s.
Tf = (V-Vo)/g = (16.29-4.5) / 9.8 = 1.20 s. = Fall time.
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