Jawabanmu

2014-03-25T07:02:43+07:00
1/2×80×(72)2 1/2×80×5184 40×5184= 207360 maaf kalau salah
Jawaban paling cerdas!
2014-03-25T07:07:51+07:00
Ep = 1/2.m.v²
     =1/2.800.72²
     =1/2.800.5184
     = 1.800.2592
     = 800.2592
     = 2.073.600

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