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Verified answer
5][
g = 10 m/s²
α =
percepatan
a = g sin α
a = 10 sin α ✔️
6][
Vₐ = 2 m/s
Vₚ = 4 m/s
α = 60° → cos α = ½
Kecepatan perahu akibat arus
Vₐₚ = √(Vₐ² + Vₚ² + 2 Vₐ Vₚ cos α)
Vₐₚ = √(2² + 4² + 2 • 2 • 4 • ½)
Vₐₚ = √28 = 2√7 m/s ✔️