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2014-08-10T15:12:50-03:00
2014-08-10T15:21:49-03:00
Vm =  \frac{Sf-So}{tf - to}

Vm =  \frac{236,5-115}{20:54 - 19:15}

39/60 = 0,65 + 1 = 1,65 h

Vm = 263,5-115/1,65 = 148,5/1,65 = 90/3,6 = 25 m/s
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