단위 해석
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정의
단위를 대수적 양으로 취급하여 곱셈, 나눗셈, 약분을 통해 방정식을 검증하고 변환을 수행하는 문제 해결 기법.
설명
To convert 60 miles per hour to meters per second: 60 mi/h × 1609.344 m/mi × 1 h/3600 s = 26.82 m/s. The miles and hours cancel algebraically, leaving m/s. Unit analysis also catches errors: if a force equation yields kg·m/s instead of kg·m/s², a factor of time is missing.
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