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【题目】关于物理量或物理量的单位,下列说法中不正确的是( )

A. 在力学范围内,国际单位制规定长度、质量、时间为三个基本物理量

B. 后人为了纪念牛顿,把牛顿作为力学中的基本单位

C. 1N/kg=1m/s2

D. “千克牛顿都属于国际单位制的单位

【答案】B

【解析】试题分析:在力学范围内,规定长度、质量、时间为三个基本物理量,其中的单位:千克牛顿都属于国际单位制的基本单位,牛顿作为力学中力的单位,是国际单位制的导出单位,不是基本单位,由单位制可知:1N/kg =1m/s2,故选项ACD正确,B错误;故选B

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