A 0.151 glider is moving to the right on a frictionless, horizontal air track with a speed of 0.860 . It has a head-on collision with a 0.303 glider that is moving to the left with a speed of 2.15 . Suppose the collision is elastic. a) Find the magnitude of the final velocity of the 0.151 glider b) Find the magnitude of the final velocity of the 0.303 glider