Jawabanmu

Jawaban paling cerdas!
2014-05-28T10:14:40+07:00
Ek= 1/2.m.V²
128=1/2.m.8m/s.8m/s
128=1/2.m.64m/s
m=128:32
m=4 kg
2 5 2
2014-05-28T10:47:54+07:00
M= 2 x Ek : (v kuadrat)
m= 2x128:(8kuadrat)
m= 256:64
m = 4 kg