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tathiyennhi0412
2 năm trước
một xe đang chuyển động với vận tốc 5m/s bắt đầu chuyển động thẳng nhanh dần đều theo phương nằm ngang sau 12 phút xe đạt 54km/h. tính vận tốc xe đạt được tại thời gian 8 phút kể từ lúc xuất phát.
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