Is angular velocity times t equal to radian or angle?

Is angular velocity times t equal to radian or angle?

In the international system of units, the unit of angular velocity is radians per second, and the unit of time is seconds. The unit of their multiplication is radians
Your question:
The movement time of bullet passing through two disks: T = θ / W, and the corresponding displacement is d
So the velocity of the bullet is v = D / T = DW / θ