alleryStart learning →How is angular speed defined?
AThe rate at which the radius of curvature changes
BThe rate at which the angle of rotation changes
CThe total angle swept out over an object's whole lifetime
DThe distance an object covers divided by its mass
Answer & Solution
Correct answer: B. The rate at which the angle of rotation changes
1. Angular speed answers how fast an object is rotating, not how far it has moved in a straight line.
2. It is defined as omega = delta theta / delta t.
3. An object sweeping a greater angle in the same time has a greater angular speed.
_Source: OpenStax Physics (CC BY 4.0), Ch 6 "Circular and Rotational Motion", section 6.1 Angle of Rotation and Angular Velocity_
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