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> 某物体作直线运动，前三分之一的路程速度为v 1，后三分之二的路程速度为v 2，则该物体全程的平均速度为 A.（v1+v2）/2 B.（v1+2v2）/3 C.（3v1v2）/（2v1+v2） D.（3v1v2）/（v1+2v2）

问题：

发布时间：2024-09-09

某物体作直线运动，前三分之一的路程速度为v ₁，后三分之二的路程速度为v ₂，则该物体全程的平均速度为

A.（v1+v2）/2
B.（v1+2v2）/3
C.（3v1v2）/（2v1+v2）
D.（3v1v2）/（v1+2v2）

参考答案：

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