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> 一质量为m的物体沿倾角为θ的固定斜面匀速下滑，滑到底端历时为t，则下滑过程中，斜面对物体的冲量大小和方向为（　　） A．大小为mgcosθ•t B．方向垂直斜面向上 C．大小为mgsinθ•t D．方向竖直向上

问题：

发布时间：2024-09-12

一质量为m的物体沿倾角为θ的固定斜面匀速下滑，滑到底端历时为t，则下滑过程中，斜面对物体的冲量大小和方向为（　　）

A．大小为mgcosθ•t B．方向垂直斜面向上

C．大小为mgsinθ•t D．方向竖直向上

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提问用户：Cj***hnt

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一质量为m的物体沿倾角为θ的固定斜面匀速下滑，滑到底端历时为t，则下滑过程中，斜面对物体的冲量大小和方向为（ ） A．大小为mgcosθ•t B．方向垂直斜面向上 C．大小为mgsinθ•t D．方向竖直向上

可能感兴趣的题目：

一质量为m的物体沿倾角为θ的固定斜面匀速下滑，滑到底端历时为t，则下滑过程中，斜面对物体的冲量大小和方向为（　　）

A．大小为mgcosθ•t B．方向垂直斜面向上

C．大小为mgsinθ•t D．方向竖直向上