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수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
space
2020.12.20 20:25
조회 375
스페이스는 2.7km 떨어진 두 소리 감지기 사이에 있다
먼저 스페이스가 꿱 소리를 지른다
소리 감지기는 꿱 소리가 들리면 삐 소리를 낸다
스페이스는 삐 소리가 들리면 꿱 소리를 지른다
이게 계속 반복된다
단, 왼쪽에 있는 소리 감지기는 고물이라서 1초 후에 소리를 낸다
스페이스도 0.5초 후에 소리를 지른다
스페이스가 5회 연속 1초 이하 간격으로 소리를 지르면 목이 다치고,
소리 감지기가 3회 연속으로 2초 이하 간격으로 소리를 내면 고장난다
그럼 소리가 원 모양으로 퍼져 나가고, 소리의 속도가 331m/s라고 할 때 스페이스와 두 소리 감지기 기계는 언제 다치거나 고장날까?
지금 바로
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