A 223-G Bullet Moving at 1 000 M/s Is Fired Through

Multiple Choice

A 22.3-g bullet moving at 1 000 m/s is fired through a one-kg block of wood emerging at a speed of 100 m/s.What is the change in the kinetic energy of the bullet-block system as a result of the collision assuming the block is free to move?

A) 0 J
B) 10.8 kJ
C) -10.8 kJ
D) 11.2 J
E) 223 J