And now instead of assuming that this block is stationary, let's assume that it's moving with a constant velocity.

假设它以匀速，假设它以匀速。

Try to slow down and speak at a clear, controlled pace.

尽量放慢速度，清晰、匀速地讲话。

Set your car to cruise control or try driving at a consistent speed.

把你的车调到巡航控制状态或试着匀速驾驶。

It basically helps the boat float more evenly at all times, making loading at docks and sailing easier.

这有助于货轮始终匀速地漂浮，使码头装货和航行更容易。

An object in motion stays in uniform motion unless acted upon by an external force.

除非受到外力作用，否则中的物体将保持匀速。

When flying along at constant speed, these forces must be perfectly balanced by the tension in the rope.

当匀速飞行时，这些力必须通过绳索的张力完平衡。

Eugenie drew her stitches with a uniform motion which revealed to an observer the teeming thoughts of her meditation.

尤金妮以匀速的作画线，向观察者展示了她沉思的丰富思想。

You might recognize those terms, because we’ve already talked about them in our episode on uniform circular motion.

您可能认得这些术语， 因为我已经在匀速圆周一集中过它。

You might recognize those terms, because we've already talked about them in our episode on uniform circular motion.

您可能会认出这些术语，因为我过它 已经处于匀速圆周循环中。

This is the same type of velocity we used when we talked about the physics of uniform circular motion.

这与我使用的速度相同 我了匀速圆周的物理学。

It's known as uniform circular motion, and it's what occurs when anything moves along a circular path in a consistent way.

它被称为匀速旋转 当物体在圆形路径上匀速时。

So, let's recall what we know about uniform circular motion, to see what it can tell us about simple harmonic motion.

让我回忆一下我对匀速圆周的了解， 让我看看它可能会告诉我关于简谐的信息。

So, let’s recall what we know about uniform circular motion, to see what it can tell us about simple harmonic motion.

那么，让我回顾一下我对匀速圆周的了解， 看看它能告诉我什么关于简谐。

In uniform circular motion, we’ve described it as the number of radians per second that the marble covers as it moves around the ring.

在匀速圆周中，我将其描述为弹珠绕环移时每秒覆盖的弧度数。

Next, when the acceleration of an object  does not change, when the acceleration remains constant or uniform, we can use these uniformly  accelerated motion equations or UAM equations.

接下来， 当物体的加速度不变时，当加速度保持恒定或匀速时，我可以使用这些匀速加速方程或UAM方程。

I then asked eighteen blind volunteers to feel the wheels and assign one of the following motions to each wheel: wobbling, spinning fast, spinning steadily, jerking or braking.

之后，我邀请了 18 位盲人志愿者去触摸一下这些轮子（的图画）并且将以下方式指定给每个轮子（的图画）：随意转、快速转、匀速转、颠簸和刹车。

But we can also describe an object’s rotation in terms of its tangential velocity. This is the same type of velocity we used when we talked about the physics of uniform circular motion.

但我也可以根据物体的切向速度来描述物体的旋转。这与我在匀速圆周物理学时使用的速度类型相同。

Now, we’ve also talked about the frequency of uniform circular motion: It’s the number of revolutions the marble makes around the ring every second, and it’s equal to 1, divided by the period.

现在，我还谈到了匀速圆周的频率：它是弹珠每秒绕圆环转的圈数，等于 1 除以周期。

87. The slim pirate was wandering the gulf at a constant pace when he overtook an African jewel and ivory boat with courage and persuaded the sailors to lend him all their navigation tools, gun powder, atlases and scopes.

这位精瘦的海盗在海湾匀速游弋，他勇敢地超越了一艘（载） 珠宝和象牙的非洲船只，并说服船员将他的导航工具、火药、地图册和望远镜全都借给他。