After polishing his 2-kg wrestling trophy, mike sets it down on the ground and walks away to find more polish. meanwhile, julie comes around the corner and throws an 8-kg bowling ball towards the unguarded trophy at a velocity of 20 m/s. before the collision:

what is the initial momentum of the trophy?

what is the initial momentum of the bowling ball?

what is the total momentum of the system before the collision?

what is the total momentum of the system after the collision?

after the collision, the bowling ball slows down to a velocity of 12 m/s. what is the velocity of the trophy?