本题目来源于试卷: gc physics textbook chapter 4 problems，类别为 IB物理学
[问答题]
Whiplash sometimes results from an automobile accident when t q8 f4p ww5).jrpfubs;he victim’s rb8kh7m6;w(mzua7u 0quzvqyvna0k4 cqg (6 ;car is struck violently from the rear. Explain why the head of the victim seems to be thrown backward in this situawa gz86kzkb0ruh; 4um7uy( nv0;qc6 q7 v(aqmtion. 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.
本题详细解析:
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