Physics, 22.07.2021 07:20 ravenmcfarlandp07okx

Lúc 8 giờ, một ô tô khởi hành từ trung tâm A cầu giấy Hà Nội đến Bắc Giang với v1=46km/h để làm từ thiện. Cùng lúc đó, xe khách đi từ Bắc Kạn đến Hà Nội với v2=44km/h biết khoảng cách từ Hà Nội đến Bắc Giang là 180km. Hai xe gặp nhau lúc mấy giờ?

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Lúc 8 giờ, một ô tô khởi hành từ trung tâm A cầu giấy Hà Nội đến Bắc Giang với v1=46km/h để làm từ t...

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