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v = 4 m/s
g = 10 m/s
Dit Em ?
jawab.
v = √2gh
h =
Em = Ek + Ep
=
= . 0,5 . + 0,5 . 10 . 0,8
= 0,5 . 0,5 . 16 + 0,5 . 10 . 0,8
= 4 + 4
= 8 joule
atau
Em = Ek + Ep
=
=
= 4 + 5h joule
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