Respostas

2013-09-11T10:04:45-03:00
Vm = ∆S / ∆t
∆S= Sf - So ==> ∆S= 120km - 20km ==> ∆S= 100km
∆t= Tf - To ==> 
∆t= 11h - 6h ==> ∆t= 5h

Vm = 100km
           5h
Vm = 20km/h

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