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Physics, 08.09.2021 19:00 ericb6939

mỗi ngày hoa đi học lúc 6h45' nếu hoa cứ đi với vận tốc trung bình là 12km/h thì 7h15' hoa đến nơi. Hôm nay do bị thủng săm phải vá nên hoa xuất phát muộn hơn mọi ngày 10'. Vì sợ muộn nên hoa tăng tốc và cuối cùng đến trường đúng như mọi ngày. Tính vận tốc hoa đạt được

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mỗi ngày hoa đi học lúc 6h45' nếu hoa cứ đi với vận tốc trung bình là 12km/h thì 7h15' hoa đến nơi....
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