本题目来源于试卷: newnewnewnew，类别为 IB物理学
[问答题]
Whiplash sometimes results from an automob4 ,.pj6fzj ws 7 w (dmthax6v5v/by+zoile accident when the victim’s .sc -owuycvity * (qr;7af 5mk(fut: 1car is struck violently from the rear. Explain why the head of the victim seems to be thrown backward in this situat :c7k1;y5w (-fs.tuiy*utrmvofa(qc ion. Is it really?
参考答案:
In a whiplash situation, the car is violently pushed forward. Since the victim’s back is against the seat of the car, the back moves forward with the car. But the head has no direct horizontal force to push it, and so it “lags behind”. The victim’s body is literally pushed forward, out from under their head – the head is not thrown backwards. The neck muscles must eventually pull the head forward, and that causes the whiplash. To avoid this, use the car’s headrests.
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