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Ek= 1/2m.v^2
= 1/2.0,2,20^2
= 40 joule
m = 200 g
= 0,2 kg (jadikan satuan SI)
v = 20 m/s
Dit:
Ek?
Dij :
Ek = 1/2 x m x v^2
= 1/2 x 0,2 x 20^2
= 0,1 x 400
= 1/10 x 400
= 40 J
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