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Physics, 17.10.2021 05:00 enorton

(Câu 12. Ta có A cách B 72km. Lúc 7h30 sáng, Xe ô tô một khởi hành từ A chuyển động thẳn đều về B với tốc độ 36 km/h Nửa giờ sau, xe ô tô hai chuyển động thẳng đều từ B đến A v hat a gò nhau lúc 8 giờ 30 phút. Lúc hai ô tô cách nhau 54km là mấy giờ. A. Sh hoặc 9h C. Sh hoặc 9h30 phút B. 9h30 phút và 8h30 phút D. 9h và 8h 30 phút

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(Câu 12. Ta có A cách B 72km. Lúc 7h30 sáng, Xe ô tô một khởi hành từ A chuyển động thẳn đều về B vớ...

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