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There's lots of parts of our bodies that move, the lungs for example, and so yeah that's a good one.
我们身体很多的部分都在运动,比如肺,这个不错
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Well, right now, what we do out here is we do a little bit of stretch and handstands.
嗯，现在呢，我们在这儿做点儿伸展运动和倒立。
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So what could be our results of movement in 2 decades?
因此，我们的运动能在20年后获得怎样的结果？
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That's correct. So her answer was, if it was a full parabola, then we know it would've been at the ground before I set my clock to 0.
她说,如果运动轨迹为一条完整的抛物线,那么它在我们所设定的零时刻之前,就已经落地了
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By this we mean poor diet and physical activity and obesity, but history offers a depressing picture.
在这个问题中我们是指不良饮食,缺乏运动和肥胖,但历史情况不容乐观
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They'll keep trying to get it going, but maybe we should move on with our lives here while this is happening, and we'll click it back at the end, and if we have a nice set up at any point, I'll just stop and we'll go back and we'll look at it again.
它们会一直让它保持运动，但是或许我们应该,在这个过程中离开一会儿，我们在最后点击它，如果我们在每一个点,都有一个好的装置，我就会停止然后,返回再去看看它。
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Because the self-help movement in many ways is about telling us how it's all about the power of the mind, talk about "Think and grow rich", the book; we'll talk about the secrets which is about creating our reality through our thoughts.
因为自助运动在很多方面,是在告诉我们信念力量是怎么回事，提到《思考致富》那本书;,我们会讨论各种秘密,它们如何通过思想创造现实。
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to get our athletes used to competing in front of big crowds
让我们的运动员适应在众多观众面前比赛，
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What kind of exercise can we do on Santa Monica Beach?
我们在圣莫尼卡海滩能做什么运动？
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We are talking about particles of constant acceleration.
我们目前都是在讨论匀加速运动的质点
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I mean the truth is I'm proud to be part of a movement in which I get to call you a colleague and a friend and a mentor because what you can do here at Princeton with the Faith Council, what college chaplains, what pastors and rabbis what other people in the interfaith organizations we're a movement and we're fighting with each other and we're moving together.
事实上，我很自豪能参与到一项运动中,在这里我能称你为同事或朋友,或导师,因为你在普林斯顿大学,为信仰委员会所做的，大学牧师，基督教及犹太教牧师,以及其他在跨信仰组织中工作的人们,我们在发起运动，我们相互斗争,我们一同前进。
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Our picture now is going to be some particle that's traveling in the x-y plane.
我们现在的情景是在 x-y 平面内,运动的质点
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In kinematics, you don't ask the reason behind anything.
在运动学中,我们不关心现象背后的原因
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The fact that when you go in a circle, you accelerate is what we're learning here, coming from the fact that velocity is a vector and its change can be due to change in the magnitude or change in direction.
而当你做圆周运动时你也在加速,这是我们在这里所学到的,原因就在于,速度是一个矢量,其变化可以通过改变模长,或者方向来实现
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We said, "Let's take, for the simplest case that we can possibly imagine, namely a particle moving in one dimension along the x-axis with a constant acceleration a.
我们说过,"考虑我们可以想象的最简单的情况,即质点在一维空间运动,沿着 x 轴且保持恒定加速度 a
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And that's the following. Let's take a particle that is moving in the x-y plane, so that at one instance-- sorry, let me change this graph-- is here--oh, this is bad.
接下来,我们来看一个物体,在 x-y 平面内运动,在这个例子中,对不起,我要重画一下这个图,在这里,这画得不好
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Quite often, it's natural to pick x and y in a certain way, because starting a projectile near the Earth, it makes sense to pick the horizontal as x and vertical as y.
我们经常会很自然地选取 x 轴和 y 轴,因为如果在地表附近做抛物运动,我们通常以水平方向为 x 轴,竖直方向为 y 轴
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