A 350-G Bullet, Traveling at 250 M/s, Hits a Hinged, Light

Multiple Choice

A 3.50-g bullet, traveling at 250 m/s, hits a hinged, light board at right angles, at a distance of 55.0 cm from its hinges, and emerges on the other side of the board with a speed of 150 m/s. The board is initially stationary but is free to rotate about its hinges and has a moment of inertia of 0.275 kg∙m². What is the angular speed of the board after the bullet emerges?

A) 0.700 rad/s
B) 3.05 rad/s
C) 6.10 rad/s
D) 0.0212 rad/s
E) 22.6 rad/s