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m= 0,02 kg
v= 200 m/s
Dit:
Ek=..?
Penye:
Ek= 1/2.m.v²
Ek= 1/2×0,02×200²
Ek= 0,01×40000
Ek= 400 Joule
v = 200 m/s
Ditanya = Ek..?
Jawab = Ek = x m x v²
= × 0,02 × 200²
= × 0,02 × 40000
= 0,02 x 20000
= 400 Joule