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= 1/2 . 10 . 12^2
= 5 . 144
= 720
m = 10 kg
v = 15 m/s
dit Ek?
jawab:
Ek = 1/2 m.v2
=1/2 x 10 x 15 x 15
= 5 x 15 x 15
= 1125 joule
semoga bermanfaat :)