Two cars, one of mass 1300 kg, and the second of mass 2300 kg, are moving at right angles to each other when they collide and stick together. The initial velocity of the first car is 13 m/s in the positive x direction and that of the second car is 19 m/s in the positive y direction.
What is the magnitude of the velocity of the wreckage of the two cars immediately after the collision?
Answer in units of m/s.