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匀变速直线运动

> 如图所示，一个小物体从光滑斜面上由 A点上方从静止开始下滑，在它通过的路径中取 AE并分成相等的四段， vA、 vB、 vC、 vD、 vE表示通过 A、 B、 C、 D、 E点的瞬时速度，表示 AE段的平均速度，则下列关系中正确的是(　　) A．＝vB B．＝vC C．vB<<vC D．vC<<vD

问题：

发布时间：2024-09-10

如图所示，一个小物体从光滑斜面上由 A点上方从静止开始下滑，在它通过的路径中取 AE并分成相等的四段， v_A、 v_B、 v_C、 v_D、 v_E表示通过 A、 B、 C、 D、 E点的瞬时速度，表示 AE段的平均速度，则下列关系中正确的是(　　)

A．＝v_B B．＝v_C

C．v_B<<v_C D．v_C<<v_D

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提问用户：Jz***IPM

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