Jawabanmu

2014-05-21T14:36:07+07:00
2014-05-22T00:24:00+07:00
Dik = M= 25 kg
V= 2 m/s
Dit = energi kinetik...?
jwb = 1/2 . m . v
= 1/2 . 25 . (2)"
= 1/2 . 25 . 4
= 50 joule