Solve the all parts of given problem:
Problem: On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. It strikes a red glider that has mass 0.600 kg and that is initially at rest. After the collision, the blue glider is moving to the left with a speed of 2.70 m/s.
Part A: What are the magnitude and direction of the velocity of the red glider after the collision?
Part B: Is this collision elastic?
Please use great detail in explaining the solution. Thank you.