Respostas

2013-09-02T19:16:10-03:00
S = So + Vot - gt²/2
500 = 0 + Vo*20 - 10*(20)² / 2

500 = 20Vo - 2000

2500 = 20Vo

2500/20 = Vo

250/2 = Vo

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Vo = 125m/s
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