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Verified answer
bidang licin
g = 10 m/s²
h = 20 m
v = __?
Kecepatan benda di titik terendah
v = √(2 g. h)
v = √(2 • 10 • 20)
v = 20 m/s ✔️
Ek di lembah = Ep di puncak
½ m v² = m g h
v² = 2 g h
v = √(2 g h)