一元硬币滚动十圈,圆心的位移和路程怎么算
一元硬币滚动十圈,圆心的位移和路程怎么算
数学人气：353 ℃时间：2020-02-23 10:22:41
优质解答
圆心的位移大小和路程是相等的,都是 S＝10*2πR,R是硬币的半径.
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