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A puck of mass 80.0 g and radius 4.30 cm slides along an air table at a speed of 1. It makes a glancing collision with a second puck of radius 6.

A puck of mass 80.0 g and radius 4.30 cm slides along an air table at a speed of 1.50 m/s as shown in Figure (see attachment). It makes a glancing collision with a second puck of radius 6.00 cm and mass 140.0 g (initially at rest) such that their rims just touch. Because their rims are coated with instant-acting glue, the pucks stick together and spin after the collision (Fig. b).
(a) What is the angular momentum of the system relative to the center of mass?
kg · m2/s
(b) What is the angular speed about the center of mass?
rad/s

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