Respostas

2014-02-11T12:36:06-02:00
A = ΔV / Δt

2 = \frac{Vf - 15 }{9 -4}

2 . 5 = Vf - 15
10 = Vf - 15

Vf = 10 + 15

Vf = 25 m/s