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  • 09-11-2022
  • Physics
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Bài 3. Lúc 7 giờ, 1 xe máy đi với v=50 km/h xuất phát từ thành phố A tới, thành phố B cách nhau 140 km. Một xe ô tô xuất phát tức 8h 30 với vận tốc V₂ và họ gặp nhau lúc 9h
a) Tính V2
b) sau bao lâu kể từ lúc gặp nhau họ cách nhau 70 km​

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