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> 如图所示．一个小物体沿光滑斜面由 A点从静止开始加速下滑，在它通过的路径中取 AE并分成相等的四段， VB表示通过 B点时的瞬时速度， V表示 AE段的平均速度．则 VB与 V的关系是 ( ) A．VB<V B．VB＝V C．VB>V D．以上三种关系都有可能

问题：

发布时间：2024-09-09

如图所示．一个小物体沿光滑斜面由 A点从静止开始加速下滑，在它通过的路径中取 AE并分成相等的四段， V_B表示通过 B点时的瞬时速度， V表示 AE段的平均速度．则 V_B与 V的关系是 ( )

A．V_B<V B．V_B＝V

C．V_B>V D．以上三种关系都有可能

参考答案：

提问用户：qz***Bvd

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A．V_B<V	B．V_B＝V
C．V_B>V	D．以上三种关系都有可能