Respostas

2013-11-30T14:56:43-02:00
Fr = m.a
Fr² = 3² + 4²
Fr² = 9 + 16
Fr² = 25
Fr = 5N

5 = 10.a
a = 5/10
a = 0,5m/s²

v = vo + a.t
v = 0 + 0,5.4
v = 2m/s
2 5 2