Respostas

2014-02-07T15:23:48-02:00
Vm = Delta S/ Delta t, isolando o t, temos que t = Vm/Delta S {Vm= 60km
                                                                                                   {Delta S = 500m = 0,5 km

t = 60km/0,5 km
t = 120 segundos (ou 2 minutos)