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[창의 퍼즐] [대수]탱탱볼 낙하실험
MathlabJ 2020.04.30 18:22 조회 704
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

어느 한 탱탱볼은 바닥에 떨어지면 낙하 높이의 n/10 만큼 다시 튀어오른다. n이 10보다 작은 자연수라고 할때, 다음 물음에 답하여라.

 

1. 100m 위에서 이 탱탱볼을 떨어뜨렸을때, 튀어오르는 높이가 8cm 이하가 되기까지 바닥에 6번 닿았다고 한다. 이때 n이 될수 있는 자연수를 모두 구해보자.

 

2. n=5 일때, 100m 위에서 떨어뜨린 탱탱볼이 이동한 총 거리가 290m를 처음으로 넘게 되는 시점까지 탱탱볼은 바닥에 총 몇번 닿았을까?

 

두 문제 모두 풀이 필수입니다.

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    닮은살걀 Lv.4 2020.05.04 08:23 비밀댓글

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