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= ½×0.5×4²
=4 joule
Fyi massa nya dirubah ke kg dl
Jadi 500 g = 0.5 kg
v = 4m/s
dit = EK...?
jawab = EK = 1/2 m.vpangkat 2
= 1/2 0,5 .4 pangkat 2
= 0,25.4.4
= 4 J