Respostas

2013-12-02T10:33:10-02:00
v=10 -3.t
V = Vo + at     (comparando)

Vo = 10 m/s
SC = So +VT = ( sC = 0 + 50t ) e SM = 120 + 70t
SC = SM =
50t = 120 + 70t
20t = 120
t = 6h