gc textbook chapter 7 Linear Momentum (id: 5e345fbaa)

本题目来源于试卷: gc textbook chapter 7 Linear Momentum，类别为 通用国际物理

[填空题]
A 12,600-kg railroad car t;ipv hqx(d+git//- 7 awv 7ltzl gyz)+ravels alone on w9awbq; 5o3 vqalevel frictionless track with a constant speed of 18m/s A 5350-kg load,initially at rest, is dropped onto the 5;abv9wo qw3q car. What will be the car’s new speed?    m/s

参考答案: 12.6±2%


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