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pada saat t = 0 s, θ = 20 rad
pada saat t = 3 s, θ = 62 rad
ω rata-rata
= Δθ / Δt
= (62 - 20) / (3 - 0)
= 42 / 3
= 14 rad/s
maka besar kecepatan sudut rata-rata yaitu 14 rad/s