Final answer:
Spin is the angular motion of an object about its own axis, and is different from circular motion, which occurs along the circumference of a circle. Angular velocity is the rotational analog of linear velocity, and rotational angle is the analog of distance in rotational motion.
Step-by-step explanation:
Spin refers to the rotational motion of an object about an axis that typically passes through the object. When considering what kind of motion is called spin, the correct option is b) Angular motion. This is because angular motion describes the rotation of a body about an internal axis, much like the Earth rotating on its axis or a figure skater performing a spin on the ice.
Circular motion, on the other hand, refers to the movement of an object along the circumference of a circle or its rotation along a circular path. This is distinct from spin, which is more narrowly defined as rotation about an object's own axis. Understanding these concepts in physics is important because they help explain phenomena observed in everyday life and various technologies.
The rotational analog of linear velocity is angular velocity, which describes how fast an object spins or rotates. The rotational analog of distance is the rotational angle, which measures the extent of the rotation.