And what Newton's Second Law of Motion

这就是 牛顿第二定律告诉我们的。

I hope you enjoyed learning about Newton's 3 Laws of Motion today.

我希望今天你们能够享受学习牛顿的三个运动定律的过程。

You can take advantage of this motion by using Newton's first law.

你可以利用牛顿第一定律来利用这个运动。

But you can calculate Mercury's orbit very precisely using only Newton's laws of gravity.

但是，只要用牛顿的引力定律我们就能精确地算出水星的轨道。

You have experienced Newton's first law if you have ever used a swing on a playground.

你可能体会过牛顿第一定律，当你在操场玩秋千的时候。

That 'regular' physics is the physics that deals with Newton's laws of motion and its related mechanics.

所谓的“一般”物理是指处理牛顿运动定律及其相关力学的物理。

It was turning into a battle between the second law of thermodynamics and Newton's law of universal gravitation.

它变成了热力学第二定律和牛顿万有引力定律之间的斗争。

Other examples of this- this is maybe the most famous example of Newton's third law-- is just how rockets work.

我们真正理解牛顿在谈论什么我们真正理解牛顿在谈论什么。

19. The boy, who studied Newton's laws, explained why the ball kept rolling.

19. 这个研究了牛顿定律的男孩解释了为什么球一直滚动。

But it follows from Newton's laws that there is no unique standard of rest.

但是根据牛顿定律，没有唯一的休息标准。

48. Wherever there's an absence of external forces, Newton's first law reigns supreme.

48.只要没有外力，牛顿第一定律就具有至高无上的地位。

The motion of planets around the sun provides insight into Newton's laws.

4. 行星围绕太阳的运动提供了对牛顿定律的深入了解。

But, what does Newton's famous third law really mean, though?

但是，着名的（牛顿）定律是什么意思？ 那么第三个呢？

And we can use what we know about impulse -- and Newton’s third law -- to prove it.

我们可以使用我们对冲量的了解——以及牛顿第三定律——来证明这一点。

But given that, we know that the net force on it must be 0 by Newton's laws.

但考虑到这一点，我们知道根据牛顿定律，它所受的合力必须为 0。

What happens to a body when a force does act on it is given by Newton's second law.

牛顿第二定律给出了当力作用于物体时物体会发生什么。

It's not the same as the normal force, and it has nothing to do with Newton's third law.

这和正常的电源不一样，和它无关 它有牛顿第三定律。

And this idea connects nicely to Newton's second law: net force is equal to mass x acceleration.

这个想法很好地进入了法律 （牛顿）II：合力等于加速度。

They spend suppertime summarizing the story they read in ninth-grade English that day, or explaining how Newton's laws of motion work.

他们用晚饭时间总结当天用九年级英语读到的故事，或解释牛顿运动定律的工作原理。

For example in physcis: Suppose you are learning about a new law of physics, such as Newton's second law of motion.

例如在物理学中：假设您正在学习一条新的物理定律，例如牛顿第二运动定律。