Respostas

2013-10-25T10:56:41-02:00
V1 = 100 km/h                Vm = ∆s total
V2= 80 km/h                            ∆t total
                                     Vm = variação de espaço1 + variação de espaço2
                                              variação de tempo1 + variação de tempo2
                                     Vm = v1 . t1 + v2 . t2
                                                   t1 + t2
                                     Vm = 100 . t1 +80 . t2
                                                  t1 + t2
                                      Vm = 180 . t
                                                  2. t
                                        Vm = 90 km/h