本题目来源于试卷: gc physics textbook chapter 3 problems，类别为 IB数学
[问答题]
If you are riding on a train that speeds past anou9(/s 6gvbke8so)v8z b:yx v tt3e5+ h0bzpn,xkfpa +hj q :p3dher train moving in the same direction on an adjacent track, it appears that t:+nj+ phhbf35k3 e0,p dpqxa zhe other train is moving backward. Why?
参考答案: Your reference frame is that of the train you are riding. If you are traveling with a relatively constant velocity (not over a hill or around a curve or drastically changing speed), then you will interpret your reference frame as being at rest. Since you are moving forward faster than the other train, the other train is moving backwards relative to you. Seeing the other train go past your window from front to rear makes it look like the other train is going backwards. This is similar to passing a semi truck on the interstate – out of a passenger window, it looks like the truck is going backwards.
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