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m = 10 gram = 10/1000 = 0,01 Kg
V = 100 m/s
dit : Ek ?
dijawab :
Ek = 1/2 x m x v²
= 1/2 x 0,01 x 100²
= 1/2 x 0,01 x 10.000
= 50 J