我只比较,它们碰撞前一刻,与碰撞后一刻。
I only compare just the moment before they hit with just the moment after they hit.
冲击与碰撞的问题。
与碰撞之后相同,它是m2乘以v2’,负m1乘以v1
It's the same before as it is afterwards, so this must be m2 times v2 prime minus m1 times v1 prime.
They take an atom of lead, accelerate it and have it collide with an atom of nickel.
他们选取一个铅原子,将其加速,让它与镍的原子碰撞。
In the course of traveling, cultures encounter other culture and they often encounter cultures that are very different from their own.
在旅行过程中,文化与文化相互碰撞,而人们通常则会遇到,与其自身所处文化截然不同的另一些文化
Pressure is when you have one of these hard spheres colliding against the wall.
这是一个小球,它与墙发生碰撞。
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