Velocity can be of two types i.e, linear velocity and angular velocity. The linear velocity defines the motion of the object in the straight line while the angular velocity defines the motion of object in the circular direction.
The linear velocity is denoted by v and angular velocity is denoted by ω then the relation between both the velocities is:
v = ω*r rad / sec
where,
v = linear velocity of the object
ω = angular velocity of the object
r = radius of curvature along which object is moving