Angular displacement is measured in
Correct answer: B. radians
- 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.
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About Angular Displacement
Angular displacement measures the change in a body’s angular position and is expressed in radians or degrees, with anticlockwise and clockwise directions assigned signs. It connects to arc length, angular velocity and angular acceleration, and must be distinguished from ordinary linear displacement in rotational motion.
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