Linear speed :

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• The linear speed is the speed of an object along its path of motion.
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• Linear speed is an object moving in a straight line (either x or y direction)
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• Linear speed of the object is , where  is the distance travelled in time .
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Angular speed :

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• Angular speed of the object is , where angle (measured in radians) swept out, divided by the elapsed time .
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• Angular speed is harder to explain without a diagram. Its how fast an object is changing its angle (rotating) about an axis.
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• To use angular speed, we will need to have a couple things, a reference point and the distance from that point to a point on the path of motion (also known as the radius).
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• Angular speed (rads/s) is the speed of something moving in a circular path.
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Relation between linear speed of an object and angular speed of the object is , where is the radius of the circular motion and is measured in radians per unit time.