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• Energi
m = 2 kg
v1 = 4 m/s
Ep2 = __?
Energi mekanik kekal (?enurut HKE)
Enrrgi potensial di titik tertinggi sama dengan energi kinetik di titik terendah
Ep2 + Ek2 = Ep1 + Ek1
Ep2 + 0 = 0 + Ek1
Ep2 = Ek1
Ep2 = ½ m v1²
Ep2 = ½ • 2 • 4²
Ep2 = 16 J ← jwb