Across
- 1. is the measure of the amount of matter in an object
- 2. the space in between objects
- 4. the ability to do work
- 6. its a force of attraction between objects due to their mass
- 9. force of gravity or the heaviness of a person or thing.
- 10. rate at which velocity changes with time
- 11. a push or pull
Down
- 1. a material substance
- 3. planets,stars,galaxies
- 5. when something travels around another object in space
- 7. space in between objects
- 8. a machine that floats around in space
- 11. fall when gravity is pulling it down and no other forces are acting on it