Kecepatan rata-rata
v̅ = Δx/Δt
v̅ = { 5. 20 + 0,5. 20.(10-5) - 0,5. 20.(20-10) } / 20
v̅ = ( 100 + 50 - 100 ) / 20
v̅ = 50/20 = 2,5 m/s
Jawaban. A)
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Kecepatan rata-rata
v̅ = Δx/Δt
v̅ = { 5. 20 + 0,5. 20.(10-5) - 0,5. 20.(20-10) } / 20
v̅ = ( 100 + 50 - 100 ) / 20
v̅ = 50/20 = 2,5 m/s
Jawaban. A)