Answer the following questions related to speed in uniform circular motion:
a. (i) Define angular speed ω and frequency ν and state the SI unit of each.
b. (ii) Distinguish between linear speed v and angular speed ω for a particle moving in a circle.
c. (iii) Keeping angular speed constant, explain qualitatively why the linear speed of a point on a rotating disc increases when the point is farther from the centre.