A 0.150kg glider is moving to the right (+x) on a frictionless, horizontal air track with a speed of 0.80m/s. It has an elastic collision with a 0.300kg glider moving to the left (-x) with a speed of 2.20m/s.
a) What is the initial momentum of each glider? Express the momentum in terms of unit vectors.
b) Find the velocity (magnitude and direction) of each glider after the collision.
c) Show that kinetic energy is conserved