What quantity will have units of rad/s?

Angular velocity is the quantity that has units of radians per second (rad/s). It measures the rate of rotation around an axis, indicating how quickly an object is moving through an angle. In physics, angular velocity is defined as the change in angular displacement over time. The unit radian is a measure of angle, and second is a measure of time, which together form the unit of angular velocity.

For comparison, linear displacement refers to a change in position and is typically measured in units such as meters. Linear velocity, which describes the rate of change of linear displacement with time, is measured in meters per second (m/s). Angular displacement, indicating the angle through which an object has rotated, is expressed in radians but does not represent a rate of change; thus, it does not convert to rad/s. Therefore, angular velocity is the only option that correctly aligns with the unit rad/s.