Well the problem is that the problems grow faster than the computers speed up.
问题就在于我们要处理的问题的复杂度,比计算机提速还要快。
Okay. So at that point the music begins to speed up with the accelerando.
嗯,从音乐的那一点开始,节奏随着渐速音加快
OK. Now. This is just sort of bringing us back up to speed and adding a few more details in.
好,现在,我们刚刚回头,过去看了一些,细节问题。
So hopefully next time we do a formal charge question, we'll get everyone back up to speed.
希望我们下一次做关于形式电荷的问题的时候,大家能够做得快一点。
And I could take that information, type it up into a program, make some assumptions about speed and direction and what routes they're going to take and actually watch the ambulance go to St. John's Mercy.
我得到这条信息之后,将它输入程序里,假设它们的速度和方向,以及它们应走哪条线路,就能看到救护车进入圣约翰医院。
It means, when you are accelerating upwards, as the elevator picks up speed, the reading on the spring will be more and you will feel heavy.
也就是说当你向上做加速运动时,就像电梯加速的时候,弹簧的读数会增大,你会觉得自己变重了
And the experimenter is back there with the speed knob and at random intervals he just speeds up the tape of their heart and then slows it down.
实验者回到实验室,带着录音设备,随机地,他加速了心跳的录音,然后又慢下来。
So that way you can have an idea if, oh, I do really understand this but I'm a little bit slow, maybe I need to practice this one type of problem a little bit longer so I can get up to speed so I'm going to be able to get through all this in terms of the exam time.
这样你就可以知道,假设,噢,我真的懂这个,但是我的速度有点慢,或许我需要在练习这个类型的题目上,多花一点时间,这样我就可以提高自己的速度,可以全部做完,在考试规定的时间内。
So, you picked up some speed, then you're coasting along at a steady speed.
所以当你加到一定速度,然后你便匀速上升的时候
It's something I throw up has an initial speed of 10 meters per second.
抛出物体的,初速度是10米/秒
What it means is if you'd release a rock at that location one second before with a certain speed that we can calculate, it would've ended up here with precisely the position and velocity it had at the beginning of our experiment.
它的意义在于,若在该处以特定速度抛出一个物体,这个速度可通过计算得到,一秒之后,物体会运动至我们设定的起点,并且速度为我们设定的初速度
Remember, you've got to keep track of the sign of acceleration, so if you're picking up speed towards the ground, a is negative, so it will be g plus a, but a is a negative number.
记住,一定要注意加速度的符号,所以当你加速下降的时候,a 是负的,还是 g 加上 a,但是 a 是负数
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