天津市第一中学2024-2025学年高三上学期第二次月考物理答案
参考答案选择题123456BCDCDA789101112DABDABADCD实验题13.(1)AB(2)BD(3)A14.(1)1.0(2)0.20(3)B计算题15.【答案】(1)4m/s(2)11.2N【详解】(1)根据题意,设小球A从最低点开始运动时的速度为v0,由动量定理有设与B碰前瞬间A的速度大小v,从最低点到最高点,由动能定理有联立代入数据解得(2)A与用轻绳悬挂的静止小球B正碰并粘在一起,由动量守恒定律有设A、B碰后瞬间轻绳的拉力大小为F,由牛顿第二定律有联立代入数据解得16.【答案】(1),;(2)或;【详解】(1)有题意可知A、B系统碰撞前后动量守恒,设碰撞后两小球的速度大小...
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