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牛顿第一定律
时间:2022-01-01 11:27
关键词:
运动生物力学
生物学
大学试题
理学
答案解析
<p> 物体若不受其他物体对它的作用,它将保持其静止或匀速直线运动状态不变。</p>
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下面是某老师在初中物理“牛顿第二定律”一课的教学片段。师:牛顿第二定律的内容是什么?生:物体加速度的大小跟作用力成正比,跟物体的质量成反比;加速度的方向跟作用力的方向相同。师:嗯,很好。那如果所受的作用力为零呢?生:那就成了牛顿第一定律了。师:嗯,不错。牛顿第一定律是牛顿第二定律的特殊情形。它描述了物体不受力时的运动状态。问题:(1)指出该教师的不足之处。(2)设计一个教学片段改正教师的问题。
最新问题
一切物体如果没有受到外力作用,总是保持()或()状态,直到有外力迫使它改变这种运动状态,称为牛顿第一定律。
牛顿第一定律
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系统中雷达状态包括Unknown、Operational(or ON)、Failed(or OFF)、Detached。
海水运动方程就是牛顿第二运动定律在海洋中具体应用。
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