Jawabanmu

2014-02-27T20:41:52+07:00
Ek = 1/2 m v2 Ek = 1/2 x 2 x 4 Ek = 4
2014-02-27T20:42:57+07:00
Ek= 1/2 m v2
Ek =1/2 x 2 x 4
Ek = 4
...
jawabannya itu