10 - 10 10-1 1 2 1 2 3 10-2 1 1 2(= 2 = 10-1

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10. 충돌 10-1 충돌이란? 1. 충돌의 정의 둘 이상의 물체가 순간적으로 큰 힘을 주고 받아 속도가 급격히 변하는 운동과정 2. 기본문제 1) 충돌한 뒤의 운동상태? 2) 충돌과정에서 주고받는 힘? 3. 문제 풀이에 쓰는 도구 보존법칙 (에너지, 선 운동량, 각 운동량) 충돌 전후: 총 선운동량 보존 탄성충돌 전후: (+) 운동에너지 보존 비탄성충돌 전후: (+) 운동에너지 비보존
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10-2 충격량과 선 운동량 1. 충격량-선운동량 정리 1) 문제: 충돌과정에서의 물체의 선운동량의 변화  ? 2) 풀이  는 매 순간의 선운동량의 변화  를 충돌과정 동안 적분한 값  ≡  처음 처음  운동방정식:           처음   ≡ , “충격량” (= 충돌에서 전달되는 운동량) 2. 평균힘 와 충격량 평균힘:  (  = 충돌이 지속되는 시간)
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표본문제 10-1 수평방향으로 날아온 야구공이 방망이에 맞아 반대방향으로 날아간다 야구공:    , 처음    , 나중   충격시간:     문제 1. 야구공이 받은 충격량 ? 2. 야구공이 받은 평균힘 ? 3. 야구공의 가속도 ? 풀이 1.   나중   처음   나중   처음    나중   처음           ⋅  2.    ⋅  ×       3.  ×      ×  
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10-3 일차원 탄성충돌 정지한 표적과의 충돌 탄성충돌:
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  • Spring '05
  • Leekyungsook

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