9. A ball (m,) of mass 0.440kg moving east with a speed of 3.30 m/s collides head-on with a 0.220 kg ball (m2) at rest. If the collision is perfectly elastic, what will the speed of each ball be after the collision? (Hint: the relationship of the velocities before and after the collision is Vij - V2; = V2 - V1. This equation may be useful if you have two unknowns in an equation.) a. Solve for V2f in terms of V,f using the provided information. b. Using the law of conservation of momentum, substitute your answer from part (a) and solve for the final velocity of the first ball. c. Solve for the final velocity of the second ball