And second, rotating objects have angular velocity, just as translating objects have linear velocity.

其次，旋转物体具有角速度， 运动物体具有线速度。

So, like linear velocity, tangential acceleration depends on the distance between the point and the center of the object.

因此，与线速度一样，切向加速度取决于点与物体中心之间的距离。

Well, we've already learned that plain old translational, or linear, velocity is a measure of an object's change in position.

好吧，我们已经学会了那个速度 过渡是对物体位置变化的度量。

Well, we’ve already learned that plain old translational, or linear, velocity is a measure of an object’s change in position. And in the same way, rotational velocity is a measure of an object’s change in angle.

好吧，我们已经知道普通的平移或线性速度是物体位置变化的量度。同样，旋转速度是物体角度变化的量度。