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If I am an inertial observer, another person moving relative to me at constant velocity will also be an inertial observer.
如果我是惯性观察者,那另一个相对于我做匀速运动的人,也是一个惯性观察者
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My favorite football player, I'd have to say... let me think about that for a second, there's a lot of them.
我最喜欢的橄榄球运动员，必须得说……让我想想，太多了。
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That's called a pick-up. Okay? So we have a little pick-up I was thinking of a diver in the Olympics.
我们称之为拾音头或唱头,我想到奥运会上的跳水运动员
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You can ask me where it will be nine seconds from now, eight seconds from now, how fast will it be moving.
你们可以问我九秒后它的位置,或者八秒后,以及它的运动速度
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There are processes that go from my nervous system, from my brain and spinal cord out to the tips of my fingers that allow me to move muscles there, or down to your toes.
神经系统中的有些突起可以,从大脑和脊髓一直延伸到,手指指端,以使我这里的肌肉能够运动,神经甚至会一直延伸到你的脚趾
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I was a soccer player and I played soccer there for the four years that I was at school.
我是个足球运动员，在大学的四年里一直踢足球。
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I'm 43 years old and I plan to keep doing all the exercises that I love doing, you know, until I die.
我今年43岁，我准备一直做那些我喜欢的运动，你知道，一直到我死。
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One, we can train them to perform these elaborate eye and arm movement tasks as you are seeing here I will describe.
第一，我们可以训练他们去完成眼睛和手臂运动等精细的动作,正如我要介绍的那样。
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I mean, there is, within Israeli politics, there is a movement of various religiously motivated people who want to reclaim the land that forefathers lived on.
我的意思是，在以色列政治中，有一种运动会由不同宗教信仰的人组成,为国家找回领土。
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And the electrical energy is the product of the charge on the electron times the voltage which is the potential difference through which the electron was accelerated. And so this allows me to, by increasing the voltage, increase the energy on the electron.
电子能量是电子上的电荷数,乘以电压的结果,这是种内在的差距,通过它电子运动得以加速，这也让我，通过增强电压，来增加电子能量。
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And when Gambetta, whom you can read about,whom I mentioned the other day, when he said,"clericalism,there's the enemy"; and,then you had this sort of campaign against the church, particularly the teaching aspect of the church that's fascinating, which I'll talk about later.
而甘贝塔,你们在书上看过,我之前也提过,他说,教权主义,就是敌人,之后就有一系列反对教会的运动,在反对教义方面尤其精彩,我之后会谈到
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Again, not themselves out there with the goats and the sheep, but they are referred to as having these herds and having to cope with them. Another very popular, I would say the most popular activity among the kings, was piracy. That's what they brag about.
并不是他们自己牧羊,他们监督放牧,管理它们,还有个非常时髦的运动,我可以说是在国王们中最流行的,那就是抢劫,他们却引以为傲
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There's a lot of, you know, surfing, water sports, skating, stuff like that that I like to do.
可以经常，你知道，可以冲浪、水上运动、滑冰，我喜欢做的那些事。
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I'm interested in sports. I'm an avid fan and I, you know, play when I have time.
我对体育非常着迷，是一个狂热的体育迷。我一有时间就去运动。
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and I guess people in this country talk about that a lot with athletes.
而且我猜这个国家的人经常跟运动员说这个。
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This I must say, this topic ignited my imagination when I was a kid when I thought about it; when I was an athlete.
我必须承认，这个话题点燃了我的想象,当我是孩子时想到它;,当我还是一名运动员时。
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And in here, there's a very male-dominated theme that you'll see pretty quickly, and what you'll see in this is that this man is being told, and men who watch it, obviously a male-oriented sort of thing that I've seen watching sporting events and the like.
这个广告片,有个明显的男权主题,你们马上就能看到了,你们会看到在这个广告中这个男人在聆听,还有在看的男人,显然这是个以男性为主要目标的广告,我看到了类似运动比赛的元素
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Even if I'm talking business, I'm going to relate it to sports first.
即使在谈业务的时候，我都要先把它和运动扯上关系。
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so I know the skills that the gymnasts are going to perform
所以我知道体操运动员要表演的动作，
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I will say this. What we call compound movements, big movements.
要我就这么建议。我们所说的复合运动，大动作。
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Right. I've always been into sports and I've been always very athletic.
好。我一直喜欢体育，一直是运动型的人。
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So I, I wasn't that great of an athlete,
所以我可能不是最好的运动员，
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No, I don't have enough time to exercise.
我一向来都不运动，因为我没有足够的时间。
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That's what I love about working out.
这正是我喜欢运动的原因。
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I have shown you yesterday that the speed of the particle as it goes around the circle is this .
我昨天讲过,质点做圆周运动的速率等于这个
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But things which were at rest will move at a constant velocity, opposite of the velocity that you have relative to me.
这些静止的东西都在匀速运动,方向正好跟你相对我运动的速度方向相反
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But,the history of Royalism is not--it goes beyond that, and there was a strong Royalist movement, as I've already suggested, and it wasn't just people looking backwards.
但是君主主义者们克服了这点,发起了一场强有力的保皇主义运动,就如我之前表示的,这不仅仅是人们在追溯过去
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But if I'm accelerating, the force exerted by the spring and therefore, the needle the weighing machine reads is m.
但是如果我在加速运动,那么弹簧的弹力,也就是称重机上指针的读数就是 m
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If you want to know how fast it's moving at a given time, if you want to know the velocity, I just take the derivative of this answer, which is 10-10t.
如果你想知道它在给定时刻的运动有多快,如果你想知道它的速度,我只要对这个式子求导,得到10-10t
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So what I've said so far is, a particle moving in time from point to point can be represented by a graph, x versus t.
到目前为止,我说过,一个质点随时间的连续运动,可以用一幅x-t图来表示
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