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动量定理

> 弹在射入木块前的动能为 E 1,动量大小为 p 1;射穿木块后子弹的动能为 E 2,动量大小为 p 2.若木块对子弹的阻力大小恒定,则子弹在射穿木块的过程中的平均速度大小为(　　) A． B． C． D．

问题：

发布时间：2020-03-13

弹在射入木块前的动能为 E ₁,动量大小为 p ₁;射穿木块后子弹的动能为 E ₂,动量大小为 p ₂.若木块对子弹的阻力大小恒定,则子弹在射穿木块的过程中的平均速度大小为(　　)

A． B． C． D．

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弹在射入木块前的动能为 E 1,动量大小为 p 1;射穿木块后子弹的动能为 E 2,动量大小为 p 2.若木块对子弹的阻力大小恒定,则子弹在射穿木块的过程中的平均速度大小为( ) A． B． C． D．

可能感兴趣的题目：

弹在射入木块前的动能为 E ₁,动量大小为 p ₁;射穿木块后子弹的动能为 E ₂,动量大小为 p ₂.若木块对子弹的阻力大小恒定,则子弹在射穿木块的过程中的平均速度大小为(　　)

A． B． C． D．