只猎豹的奔跑速度为31.4米/秒,一只羚羊的奔跑速度为23.6米/秒.如果羚羊在猎豹前39米处奔跑
只猎豹的奔跑速度为31.4米/秒,一只羚羊的奔跑速度为23.6米/秒.如果羚羊在猎豹前39米处奔跑
数学人气:943 ℃时间:2019-10-17 07:29:43
优质解答
5秒就可以抓到.39/(31.4-23.6)=5s
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