Final answer:
Each listed concept is matched with its definition, such as 'geodesic' for the shortest path and 'vector' for a quantity with magnitude and direction, among others.
Step-by-step explanation:
To match the concepts with their descriptions:
- Geodesic - The shortest path from start to finish.
- Vector - A physical quantity with magnitude and direction.
- Acceleration - The quantity defined as a change in velocity over a time period.
- Reference Point - The point from where you take measurements.
- Speed - The distance covered in a time interval.
- Instantaneous Velocity - The velocity at a specific instant in time.