Câu 9 : Bạn Lan tung quả bóng từ trên cao rơi xuống sàn. Mỗi lần rơi xuống sàn quả bóng nảy lên có độ cao bằng 2/3 độ cao trước đó. Bạn Lan tung bóng từ trên cao xuống dưới sàn 3 lần. Sau khi chạm sàn 3 lần quả bóng nẩy lên cao bằng 24 cm. Em hãy tính giúp bạn Lan tung quả bóng ở độ cao lúc đầu là bao nhiêu? Ghi cách lm công thức ko ghi đáp án Ai nhận dạy kèm gmail ko

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