Respostas

2014-05-10T17:41:39-03:00
Torricelli :

V²= Vo² + 2.a.d


V =   \sqrt{vo^2 +2.a.d}


substituindo os valores

V =   \sqrt{(40)^2 +2.(1,8).(50)}  =  \sqrt{1780}  = 42,2 m/s
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