如图物体在水平力f作用下沿粗糙水平面做加速运动则 A物体所受的重力和桌面对物体的支持力是一对作用力和反作用力 B物体对桌面的 Template




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tomski如图物体在水平力f作用下沿粗糙水平面做加速运动则 a物体所受的重力和桌面对物体的支持力是一对作用力和反作用力 b物体对桌面的 coloring