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제27회 서울특별시학생탐구발표대회 - ssp.re.kr 실험조건:낙하높이-1.5m(스마트폰일반휴대평균높이) 충돌면 -LCD정면충돌 3)스마트폰무게를측정하고낙하시운동량과충격량이론값을계산하여기록한다
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