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huong307c7
2 năm trước
một oto đang chạy với vận tốc 54km/h thì phát hiện 1 chướng ngại vật.hỏi để ko đụng vào chướng ngại vật cần hãm phang ở vị trí nào và thời gian hãm là bao lâu ?biết rằng lúc hãm, xe bắt đầu chuyển động chậm dần đều với gia tốc 10m/s^2
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