Respostas

2014-04-12T12:53:36-03:00
Vm = Δs
        Δt

25 = 150
        Δt

25Δt = 150
Δt = 150
        25
Δt = 6 s 
1 5 1
2014-04-12T14:07:59-03:00
V_{m}=  \frac{S}{t} , Logo se V=25 e ΔS= 150, t será =6s.