A 20-Kg Pistol Fires a 1

Multiple Choice

A 2.0-kg pistol fires a 1.0-g bullet with a muzzle speed of 1000 m/s. The bullet then strikes a 10-kg wooden block resting on a horizontal frictionless surface. The block and the embedded bullet then slide across the surface.
-What is the kinetic energy of the bullet as it travels toward the block?

A) 100 J
B) 500 J
C) 1000 J
D) 5000 J
E) 10 000 J