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a. 50 J
Ek= 1/2×m×v²
1/2×0,01×100²
1/2×100
= 50 J
1/2 * (10:1000) * 10000
1/2 * 0,01 * 10000
50 J .... A
Kalo gk ngerti, tanyak aj yo :)