【題目】關(guān)于物理量或物理量的單位,下列說法中不正確的是( )

A. 在力學(xué)范圍內(nèi),國際單位制規(guī)定長度、質(zhì)量、時(shí)間為三個(gè)基本物理量

B. 后人為了紀(jì)念牛頓,把牛頓作為力學(xué)中的基本單位

C. 1N/kg=1m/s2

D. “、千克、牛頓都屬于國際單位制的單位

【答案】B

【解析】試題分析:在力學(xué)范圍內(nèi),規(guī)定長度、質(zhì)量、時(shí)間為三個(gè)基本物理量,其中的單位:、千克、牛頓都屬于國際單位制的基本單位,牛頓作為力學(xué)中力的單位,是國際單位制的導(dǎo)出單位,不是基本單位,由單位制可知:1N/kg =1m/s2,故選項(xiàng)ACD正確,B錯(cuò)誤;故選B

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