Final answer:
The question deals with physics concepts surrounding collisions, momentum, and kinetic energy in high school level physics.
Step-by-step explanation:
The question appears to be drawn from a segment pertaining to the principles of physics, specifically related to conservation of momentum and the dynamics of collisions. Given the variety of scenarios involving cars at intersections and calculations of velocity, momentum, and kinetic energy, this question falls into the realms of classical mechanics.
However, there seems to be a typo or confusion in the initial question text regarding the 'total distance covered by the canary', which appears to be unrelated to the scenarios provided. The information given pertains to different examples of traffic collisions and the conservation of momentum in such events.
For a precise answer, a specific problem statement with associated data is needed. Every provided scenario would require its own solution based on the principles of momentum conservation and energy, using mathematical equations to calculate final velocities, the center-of-mass velocity, and changes in kinetic energy.