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不少家长喜欢把孩子抱在怀中或让其坐在腿上。实验显示,时速56公里的汽车紧急刹车时,母亲抱住一个 3岁大、体重12公斤的孩子需要150 公斤的力,相当于孩子体重的12倍还多。如果汽车时速为70公里、孩子体重增加到18公斤,母亲必须使出 250公斤的力才能抱住孩子。否则孩子就会从母亲怀中飞出。
Many parents like to hold their children in their arms or sit on their legs. Experiments show that when a car brakes a car 56 kilometers per hour in an emergency stop, a mother hugs a 3-year-old child weighing 12 kg and needs 150 kg of force, which is equivalent to more than 12 times the weight of the child. If the car is traveling at 70 kilometers per hour and the child’s weight is increased to 18 kilograms, the mother must give 250 kilograms of force to hold the child. Otherwise, the child will fly out of the mother’s arms.