The following data refers to a circular arc cam operating a flat-faced reciprocating follower:

Minimum radius of cam \(=30 \mathrm{~mm}\), Total angle of cam \(=120^{\circ}\), Radius of circular arc \(=100 \mathrm{~mm}\), Nose radius \(=10 \mathrm{~mm}\), angular velocity of cam \(=10 \mathrm{rad} / \mathrm{s}\)

Determine the velocity and acceleration of the follower when the cam has turned through \(20^{\circ}\).