A puck having mass m1 = 68.0 g and radius r1 = 4.10 cm glides across an air table at a speed of = 1.50 m/s. It forms a glancing collision with a second puck of radius r2 = 6.00 cm and mass m2 = 140 g (primarily at rest) such that their rims just touch. Because their rims are coated with instant-acting glue, the pucks stick altogether and rotate after the collision.
Determine the angular speed about the center of mass?