Respostas

2014-05-04T21:16:03-03:00
Vm=d/t
1h - 60min
xh - 40min
x ≃ 0,66

t = 1 + 0,66
t ≃ 1,66

Vm = 3000 km / 1,66h
Vm ≃ 1807.22 km/h

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