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thanhmapaa
2 năm trước
mọi người ơi giải giúp mk bài này nhăn Hai ô tô đi chuyển động cùng chiều đi từ A đến B lúc 8h,khoảng cách từ A đến B là 20km.Biết vận tốc lần lượt là 20 và 10 km/h a.viết pt chuyển động của 2 xe b.tìm thời điểm 2 xe và vị trí của 2 xe c.vẽ đồ thị hàm số d. tìm khoảng cách giữa 2 xe lúc 8h30
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