posted by Alica .
A 1.60-g bullet, moving at 542 m/s, strikes a 0.249-kg piece of wood at rest on a frictionless table. The bullet sticks in the wood, and the combined mass moves slowly down the table.
(a) Find the speed of the combination after the collision.
(b) Find the kinetic energy of the bullet before the collision.
(c) Find the kinetic energy of the combination after the collision.
(d) How much kinetic energy did the bullet lose?
(e) What percent of the bullet's original kinetic energy is lost?