Physics crossword

1. The digits in a measurement that carry meaning contributing to its precision.
4. The horizontal and vertical parts into which a single vector can be resolved.
5. The zero point on a coordinate system where all axes intersect.
9. The rate of change of displacement or speed with a specific direction.
10. The sub-field of physics that describes motion without considering its causes.
14. How close a measured value is to the true or accepted value.
15. The vector that represents the sum of two or more individual vectors.
19. The decimal-based system of measurement used by scientists worldwide.
20. The size or extent of a physical quantity.
21. How close a series of measurements are to one another.

2. The value of a quantity at a specific exact moment in time.
3. The physical nature of a quantity such as length or mass.
6. The force responsible for the acceleration of an object in free fall.
7. The Greek letter commonly used to represent the angle of a vector.
8. The longest side of a right triangle representing a vector size.
11. A physical quantity that has magnitude but no direction.
12. The rate at which an object's velocity changes over time.
13. A dimensionless vector with a magnitude of exactly one.
16. A word part like milli or kilo added to a unit to indicate a power of ten.
17. A quantity that possesses both magnitude and a specific direction.
18. The straight-line change in position from a starting point to an end point.