A large blue marble of mass 3 point 5 g is moving to the right with a velocity of 15 cm over s The large marble hits a small red marble of mass 1 point 2 g that is moving to the right with a velocity of 3 point 5 cm over s After the collision, the blue marble moves to the right with a velocity of 5 point 5 cm over s What is the magnitude of the final velocity of the red marble?