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动量定理

> 一个物体静止于光滑水平面上，同时受到在一条直线上的两个力F 1和F 2的作用，F 1和F 2与时间t的关系如图所示，则物体速率最大的时刻和物体的最大动量分别是（　　） A．10s末，120kg•m/s B．20s末，60kg•m/s C．10s末，60kg•m/s D．20s末，240kg•m/s

问题：

发布时间：2024-09-10

一个物体静止于光滑水平面上，同时受到在一条直线上的两个力F ₁和F ₂的作用，F ₁和F ₂与时间t的关系如图所示，则物体速率最大的时刻和物体的最大动量分别是（　　）

A．10s末，120kg•m/s B．20s末，60kg•m/s

C．10s末，60kg•m/s D．20s末，240kg•m/s

参考答案：

提问用户：sn***4fF

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