Impulse and momentum physics question?

Two carts are involved in an elastic collision. The dynamics cart A with m 0.550 kg hits the collision cart B with m 0.550 kg ( initially at rest ). Cart A stops after the collision and cart B continues onward. If cart A had an initial velocity of 0.552 m/s, what is the velocity of cart B after the collision? What is the initial kinetic energy for cart A? What is the initial kinetic energy for cart B? What is the final kinetic energy for both carts? Is kinetic energy conserved for elastic collisions? Is momentum conserved for elastic collisions?