A uniform board of mass 22.5 kg, length 2.10 m, and width 0.900 m is kept in a vertical position by frictionless hinges on its length. The board is unlatched and at rest when a kid strikes the board's center with a lump of their sticky molding plasticine of mass 450 g. The plasticine hits the board with a level speed of 12.0 m/s and is perpendicular to its surface. i) Determine the board's angular speed after collision. ii) Will the plasticine significantly contribute to the system's moment of inertia after the collision?

• A. i) 0.394 rad/s; ii) yes
• B. i) 0.394 rad/s; ii) no
• C. i) 0.387 rad/s; ii) no
• D. i) 0.387 rad/s; ii) yes
• E. i) 0.723 rad/s; ii) yes
• F. i) 0.723 rad/s; ii) no
• G. i) 0.400 rad/s; ii) yes
• H. i) 0.400 rad/s; ii) no

Answer: (A)