A 2.0-kg pistol fires a 1.0-kg 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. A) what is the kinetic energy of the bullet as it travels toward the block? B) what is the speed of the "bullet+block" system immediately afer the bullet is embedded in the block? I have the KE=.5mv^2-.5mv0^2 equation and substituted my numbers and am unsure how to solve part B. Also could someone explain part a for me. Thanks.