11. Now consider another experiment. Here two gliders collide on a level, frictionless air track. Glider C moves with an initial velocity of 4 m/s to the right and collides with a second glider, which is initially at rest. The mass of glider C is half that of glider D (i.e., mc = (1/2) mp). Glider C moves to the left after the collision, but its speed is unknown. a. If this collision is elastic, is it possible to determine the final velocity of glider D? Explain. b. If this collision is perfectly inelastic, is it possible to determine the final velocity of glider D? Explain. If so, write a relationship for the final velocity. To vilboley jen? ard enin Sed Obabip to ansmom ni egnano aft bluone lenwy c. If this collision is inelastic (but not perfectly inelastic), is it possible to determine the final velocity of glider D? Explain. If so, write a relationship for the final velocity. 12. A student says the following: "We know that the air track is essentially frictionless, so there is no way any energy can be taken away from the system. The air track collisions must therefore always be elastic." Do you agree or disagree with the student? Explain. Serveblin /tied to moleve ed! lol veions offenit Isitin ennitw gregmes aid) soon wall