Simple Problem?

Consider a horse drawn carriage, being pulled by three horses with a velocity of {5i + 2j - 4k} m/s. Now then, a crocodile is located on the path of the carriage a meer 40 m ahead of the current location of the carriage. a) uming a completely inelastic collision occurs, what is the final velocity of the gun that he alligator had eaten earlier that day and b) if the gun accidentily fired, what would be the final velocity of the poisonous bee that shout out of the alligator?