A 3.00-kg ball, moving to the right at a velocity of +3.50 m/s on a frictionless table, collides head-on with a stationary 7.90-kg ball. Find the final velocities of (a) the 3.00-kg ball and of (b) the 7.90-kg ball if the collision is elastic. (c) Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic. (a) Number (b) Number Units Units (c) Number Units