Jawabanmu

2014-08-27T21:33:53+07:00
W = f x s
= 50 x (400: 100)
= 50 x 4 = 200 joule
Jawaban paling cerdas!
2014-08-27T21:35:39+07:00
400cm= 4 m
w= 4m x 50 N
   = 200 N/m = 200 joule
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