Unlike linear position measured in metres, angular position is measured in units that are:
ADimensionless
BDirectionless
CDisplacement
DDiscontinuous
Answer & Solution
Correct answer: A. Dimensionless
1. Metres are a physical length unit.
2. Radians come from a ratio of two lengths.
3. So angular position is dimensionless.
_Source: OpenStax University Physics Volume 1, Chapter 10, Fixed-Axis Rotation._
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