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aeuwsa47
2 năm trước
Một chiếc máy bay đang bay song song với mặt đất ở độ cao 15km thì bắt đầu hạ cánh, đường đi của máy bay tạo 1 góc 30 độ so với mặt đất. Sau khi tiếp đất, máy bay đi thẳng với vận tốc trung bình là 21km/h để đến điểm trả khách. Hỏi hành khách phải chờ bao nhiêu phút để tới điểm trả khách tính từ lúc máy bay tiếp đất, biết quãng đg từ điểm bắt đầu hạ cánh đến điểm trả khách là 33,5km ?
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