本题目来源于试卷: gc physics textbook chapter 3 problems，类别为 IB数学
[问答题]
At some amusement pat*z*0d ok l9p; pg/j8m svrs-wrks, to get su2amo qb7h6xtm3 7f.k l3pr-on a moving “car” the riders first hop onto a moving warmxa lobs3h.kq u7326pmf 7-t lkway and then onto the cars themselves. Why is this done?
参考答案: The moving walkway will be moving at the same speed as the “car”. Thus, if you are on the walkway, you are moving the same speed as the car. Your velocity relative to the car is 0, and it is easy to get into the car. But it is very difficult to keep your balance while trying to sit down into a moving car from a stationary platform. It is easier to keep your balance by stepping on to the moving platform while walking, and then getting into the car with a velocity of 0 relative to the car.
本题详细解析:
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