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> 如图为马车模型，马车质量为m，马的拉力为F与水平方向成θ，在拉力F的作用下匀速前进了时间t，在时间t内拉力、重力、阻力对物体的冲量的大小分别为（　　） A．Ft、0、Ftsinθ B．Ftcosθ、0、Ftsinθ C．Ft、mgt、Ftsinθ D．Ft、mgt、Ftcosθ

问题：

发布时间：2024-09-13

如图为马车模型，马车质量为m，马的拉力为F与水平方向成θ，在拉力F的作用下匀速前进了时间t，在时间t内拉力、重力、阻力对物体的冲量的大小分别为（　　）

A．Ft、0、Ftsinθ B．Ftcosθ、0、Ftsinθ

C．Ft、mgt、Ftsinθ D．Ft、mgt、Ftcosθ

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