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thanhphngl
2 năm trước
Một vật rơi tự do trong 6s thì chạm đất,lấy g=10m/s^2 Tính A,độ cao thả vật và vận tốc khi vật vừa mới chạm đất B,Thời gian vật rơi trong 100m cuối cùng
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