勒物理学里向牛顿(Newton,符号为N)是力个公制单位。伊是以经典力学个建立人伊萨克·牛顿命名个。
牛顿是一只国际单位制个导出单位,伊是一只总称,伊个导出是由:kg·m·s−2个国际单位制基本单位。
一牛顿是以加诸千克之静物,秒移二分之一米,再秒移一又二分之一米,三秒移二又二分之一米······
以此为本,类而推之。倘力倍之,则所移亦倍之。
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