Which best compares the initial momentum of the boy with
the final momentum of the boy/boat system?
the initial momentum of the boy is zero because the
velocity cancels with the mass of the boy.
the initial momentum of the boy is greater than the
boy/boat because the boy has a greater velocity than the
boat.
the initial momentum of the boy is less than the boy/boat
because the boy has less mass than the boat.
the initial momentum of the boy is equal to the boy/boat
because the final velocity of the boat is less than the initial
velocity of the boy.