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Verified answer
KINEMATIKA• GJB
h₀ = 80 m
h₁ = 20 m
g = 10 m/s²
kecepatan ketika tiba di tanah
v = √(2 g h₀)
v = √(2 • 10 • 80)
v = 40 m/s ← jwb
kecepatan pada ketinggian h₁
v = √(2 g (h₀ - h₁))
v = √(2 • 10 • (80-20))
v = 20√3 m/s ← jwb