# Figure 2. [a] A disk slides toward a motionless stick on a frictionless surface. {h} The disk hits the stick at one end and adheres to it, and the).r…

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Figure 2. [a] A disk slides toward a motionless stick on a frictionless surface. {h} The disk hits the stick at one end and adheres to it, and the).r rotate together, pivoting around the nail. Angular momentum is conserved for this inelastic collision because the surface is frictionlessand the unbalanced external force at the nail exerts notorque. Rotation in a Collision Suppose the disk in F’gure has a mass of 50.0 g and an initial velocity of 30.0 rats when it stn’lces the stick that is 1.20 m longand 2.00 lcg. (a) What is the angular velocity of the two alter the collision?(D) What is the kinetic energy before and alter the collision?(c) What is the total linear momentum before and aﬂer the collision? strategy for (a) We can answer the ﬁrst question using conservation of angular momentum as noted. Because angular momentum is Iw, we ___ __I.._ .__ ___…__.__.__u__ 