Each croquet ball in a set has mass of 0.50 kg. the green ball, traveling at 12.0 m/s, strikes the blue ball, which is at rest. assuming that the balls slide on a frictionless surface and all collisions are head-on, fine the final speed of the blue ball in each of the following situations:

a. the green ball stops moving after it strikes the blue ball.
b. the green ball continues moving after the collision at 2.4 m/s in the same direction.
c. the green ball continues moving after the collision at 0.3 m/s in the same direction.