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Ek=1/2.5000.(72000/3600)^2
Ek=1 x 10^6 J = 1000 kJ
v = 72 km/jam = 20 m/s
- Ditanya : Ek ... ?
- Jawab :
Ek = × m × v²
= × 5.000 × 20²
= 2.500 × 400
= 1.000.000 J
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Simbol : m = massa ( kg )
v = kecepatan ( m/s )
Ek = Energi kinetik ( J )