3. The circular motion of an object moving around a central axis is
4. An approximate measure of a quantity is called an
5. A standard measure of a physical quantity is called unit
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Answer:3.The rotation around a fixed axis of a three-dimensional body involves circular motion of its parts. ... Since the object's velocity vector is constantly changing direction, the moving object is undergoing acceleration by a centripetal force in the direction of the center of rotation.
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