Answer:
The correct option is C.
Step-by-step explanation:
Given that Carlos operates a helicopter. Carlos decides to measure the rotational velocity of the helicopter blades. we have to find the appropriate unit for Carlos's purpose.
The angular velocity ω is the rate of change of angle with respect to time,
The formula to find the rotational velocity is
[tex]\text{Rotational velocity}=\frac{d\phi}{dt}[/tex]
Angle measure in radians or degrees and time in second.
Hence, the appropriate unit for Carlos's purpose is degrees per second.
The correct option is C.
