Jawabanmu

2014-02-21T21:45:18+07:00
Percepatan (a) = Vt - Vo 
                              t

2 = Vt - 3 
         4

2 x 4 = Vt - 3
8 = Vt - 3
Vt = 8 + 3 = 11 m/s
2014-02-21T21:47:12+07:00
Vt=vo + (a x t)
=3 + 2 x 4
11m/s