It's a physics toy that demonstrates angular momentum, potential energy, and kinetic energy.

是物理学家的玩具可以演示角动量还有动能和势能。

So a lot of kinetic energy gets distributed over a small space and the air doesn't slow it down much at all.

所以极大的动能被分布狭小的空间且空气阻力减速程度不高。

The more kinetic energy there is, the heavier these daughter particles can be.

动能越大，越能产生更大质量的粒子。

This kinetic energy depends on the mass of the object and how fast it's moving.

这动能取决于物体的质量和它移动的速度。

We have like kinetic energy, we have potential energy, friction.

我们有动能、势能和摩擦力。

When that energy is needed the water is released down the mountain where it's converted into kinetic energy that spins a turbine and generates electricity for the grid.

当需要这些能量时，水被释放到山下，那里它被转化为动能，旋转涡轮机，为网发。

Particle interactions allow for this kinetic energy to be radiated out into space at an astonishing matter-to-energy efficiency: 6% for non-rotating black holes, and up to 32% for rotating ones.

颗粒之间的相互作用使该动能得以辐射到宇宙空间。其间的物质到能量的转化效率非常惊人：非旋转黑洞是 6%，而旋转黑洞则可以高达 32%。

Wind turbines convert the kinetic energy of the wind into mechanical power.

风力涡轮机将风能转化为机械能。

As a hurricane's winds blow over the waves, the rough surface of the ocean exerts a drag on the storm, sucking energy out of it similar to how friction slows down a sliding object by removing its kinetic energy.

当飓风的风吹过海浪时，粗糙的海洋表面会对风产生阻力，从风取能量，就像摩擦力通过消除动能来减慢滑动物体的速度样。

This process works like a tiny furnace and spits out waste products like CO2, water, and a little bit of kinetic energy that you experience as body heat.

这过程就像微型熔炉样，会吐出废品，诸如二氧化碳，水和些被当做身体热能的动能。

Not only is the food's chemical energy converted into kinetic energy for an athlete's movement, but nerves and emotional stress can cause issues with digestion and proper breathing, or even cause vomiting.

食物的化学能量虽然能转化为运动员运动所需的动能，但同时神经和情绪上的压力也会导致消化问题和呼问题，甚至还会呕吐。

Its jumbo jet size floating platform called the O2 has two giant rotors that sit 60 feet below the surface of the water and can harness the energy of the ocean's tides. It's kinetic energy.

这公司的巨型喷气式飞机大小的浮动式平台名为O2，它有两巨大的螺旋桨，位于水面下60英尺，可以利用海洋潮汐的能量。这是动能。

Maybe not an ideal situation for commercial navigation through the river but a perfect scenario to capture the water's kinetic energy to spin a turbine to generate electricity.

对于商业航运来说，这种情况也许并不理想，但对于利用水的动能来旋转涡轮机发来说，却是再好不过了。

As if the sudden explosion of kinetic energy forces the mental faculties to accelerate until the perception of the exterior world goes into slow motion.

就像突然爆发的动能迫使大脑功能加速到极限，让周围的切印象都呈现出种慢镜头的效果。

At this point, the electricity is palpable, and Reggio amps up the sensation with breathtaking timelapses, and with the kinetic energy of his editing.

这点上，力是显而易见的，雷吉奥通过令人惊叹的延时摄影和他剪辑的动能增强了这种感觉。

The competition will not require the machines to produce electrical power. He says changing the mechanical kinetic energy into electrical energy is easy.

这场竞赛不需要机器来制造力，他说将机械动能转化为能很简单。

So the change in kinetic energy over time is just one half m times the difference of the squares of the velocities.

1/2·m(物体质量)·速度改变量平方机智的代数变化可将此表达式变为。

The more mass you have, the higher your kinetic energy before you hit the ground and the stronger the impact shock.

你的质量越大，你撞到地面前的动能也越高，冲击也更强。

When it's let go, it turns into kinetic energy.

当它被释放时，它就变成了动能。

Then we made machines that used kinetic energy from water and wind.

之后我们又造出了利用风能和水能机器。