Respostas

2014-02-21T18:03:33-03:00
ΔS= ΔT.Vm
ΔS= 2.60
ΔS= 120

O triplo do percurso:
120.3= 360km

Vm= ΔS/ΔT
80km/h= 360/ΔT
ΔT= 360/80
ΔT= 4,5 h