physics crossword

5. the amount or quantity of heaviness or mass; amount a thing weighs
8. the extent or amount of space between two things, points, lines
9. the rate at which an object's position changes, measured in meters per second
11. a tendency to do nothing or to remain unchanged
12. the ratio of useful output energy or power to the total input energy or power of a system
14. the rate of change of a scalar field (like temperature or electric potential) over space
15. a state where an object experiences no change in motion, meaning it's either at rest or moving at a constant velocity
16. the sum of two or more individual vectors that are being added together
17. the rate of change of the object's position with respect to a frame of reference and time
18. the stored energy an object or system possesses due to its position or configuration, often associated with the potential to do work

1. rate at which velocity changes with time, in terms of both speed and direction
2. a push or pull upon an object resulting from the object's interaction with another object
3. a form of energy that an object or a particle has by reason of its motion
4. an object's change in position independent of the path taken
6. the force by which a planet or other body draws objects toward its center
7. the quantity of matter within a given object
10. the ability to do work or the capacity to cause change
13. something which doesn't change