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m= o.2 kg= 200 gram
dit= ek....?
jawab= ek= 1/2. m.vpangkat2
1/2.200.5 pangkat 2
1/2.200.25
1/2.5000
2500N
Ditanya : Ek
Jawab : Ek = 1/2 x m x v2
= 1/2 x 0,2 x 5 x 5
= 1/2 x 0,2 x 25
= 2,5 J