Which of the first units given below can be units for angular acceleration while the second units can be units for angular velocity?

Question

Quizplus · Accepted Answer

Angular velocity has units of radians/second, which is the same as meters/second divided by meters. The second unit given in choice C (m/s) can be divided by the first unit given (m) to give radians/second.

Angular acceleration has units of radians/second^2, which is the same as meters/second^2 divided by meters. None of the other choices have units that can be divided to give radians/second^2.

Which of the First Units Given Below Can Be Units