And that linear velocity, which, in this case, is really your speed, is of course the circumference of the circle divided by how many seconds it takes to go around.

线速度，在这个例子里，就是速率，是这个圆环的周长，除以走一圈，需要的秒数。

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How many meters per second is linear, as opposed to how many radians per second, which is angular velocity.

每秒走过多少米就是线速度，和每秒经过多少弧度是相反的，那是角速度。

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Next, create your dynamic body, which has a position, initial linear velocity, and angle.

接下来，创建动态物体，它具有方位、初始线速度和角度。

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They also calculated impact dose injury risk parameters common to laboratory and on-field traumatic neuromechanics: linear acceleration, angular acceleration, angular velocity, Gadd Severity Index, diffuse axonal injury, acute subdural hematoma, and brain contusion.

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Freespace Sensor Modules are used by engineers to add inertial motion control to a product without having to learn about motion sensing or MEMS. These compact modules, the smallest of which is 9mm x 19mm x 2.5mm, are pre-calibrated for mass production, provide a well-documented API for interpreting motion, and provide data such as cursor position, linear acceleration, angular position, and angular velocity to enable the creation of novel applications.

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