Jawabanmu

2013-12-10T15:27:26+07:00
Dik : m1 = 5 kg
m2 = 5 kg
V1 = 10 m/s
V2 = 20 m/s
dit : V1'atau V' = ..?
m1V1 + m2V2 = (m1 + m2) V'
5 x 10 + 5 x 20 = (5 + 5) V'
50 + 100 = (10) V'
150 = 10 V'
V' = 150 / 10
V' = 15 m/s