大家都知道,如果你把一只面包随手丢给别人,别人只觉得有东西轻轻碰了他一下。可若是把这只面包从高楼顶上扔下来,或许就没有那么简单了。甚至会砸伤或砸死人。这是为什么呢?这里包含了物理学的原理。其实面包自己非常轻,扔出的速度也不快。可是,当它由高空落下,它的速度会变得越来越快,所以才会造成如此严重的事故。 Everyone knows that if you throw a loaf of bread to someone else, others just think something touches him lightly. However, if this bread is thrown from the top of a tall building, it may not be so simple. It can even bruise or suffocate people. Why is this? Here is the principle of physics. In fact, bread itself is very light, throwing out the speed is not fast. However, when it falls from a high altitude, its speed will become faster and faster, so it will cause such a serious accident.