Angular displacement is measured in
- A. metres
- B. radians
- C. metres per second
- D. newtons
Explanation
The radian is the SI unit of angle, and because it is defined as a ratio of two lengths it is dimensionless, which is why the formula v equals r omega comes out in metres per second without any conversion factor. Degrees and revolutions are convenient in practice but must be converted to radians before use in these formulae. Linear displacement, by contrast, is measured in metres.