A stone is dropped from a height h and falls the last half of its distance in 4s .what was the total time of fall
2022-04-24 01:40:22 26次 反馈错误 加入收藏 正确率 : 100%
题目内容：
A stone is dropped from a height h and falls the last half of its distance in 4s .what was the total time of fall
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