A 50,000-kg train car moving at 2 m/s collides and connects to another identical car initially at rest. –What is the momentum of the first train car before the collision?

–What is the final velocity of the two connected train cars?

-Is the momentum being conserved through out the collision? Explain why.

-Is the kinetic energy being conserved through out the collision? Explain why.

-Is this collision an elastic or inelastic collision? Explain why.