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10 = 5 . a
2 m/s² = a
vt² = vo² + 2 a s
vt² - vo² = 2 . a .s
= 2 . 2. 2,5
vt² - vo² = 10
Perubahan Ek = Ek kedua - Ek pertama
= 1/2 . m . vt² - 1/2 . m . vo²
= 1/2 . m (vt² - vo²)
= 1/2 . 5. 10
= 25 Joule
10=5.a
a=2 m/s^2
vt^2=vo^2 +2as
vt^2=4^2+2.2.2,5
vt^2=16+10
vt= akar 26
Ek=Ek2-Ek1
=1/2.m.(v2^2-v1^2)
=1/2.5.(26-16)
=1/2.5.10
=25 J