Respostas

2013-07-22T16:42:32-03:00
E so usar a equacao de Torricelli:

V^2 = Vo^2 + 2adS

30^2 = 10^2 + 2x4dS

900 = 100 + 8dS

800/8 = dS

dS = 100 m.
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