(6分)如图所示，光滑水平面上滑块A、C质量均为m=1kg，B质量为M=3kg。开始时A、B静止，现将C以初速度v 0

(6分)如图所示，光滑水平面上滑块A、C质量均为m=1kg，B质量为M=3kg。开始时A、B静止，现将C以初速度v₀ =2m/s的速度滑向A，与A碰后C的速度变为零，而后A向右运动与B发生碰撞并粘在一起。求：

①A与B碰撞后的共同速度大小；
②A与B碰撞过程中，A与B增加的内能。

winnylfy 1年前已收到1个回答举报

arjia 幼苗

共回答了13个问题采纳率：100% 举报

解题思路：

①对整个系统，根据动量守恒−−−−−−−−−(1分)

解得−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−(1分)

②对A和C由动量守恒−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−(1分)

对A和B由能量守恒，

−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−(2分)

解得−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−(1分)

1年前

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