Across
- 2. how fast something is going
- 4. a force that acts between moving surfaces
- 6. to come in touch
- 8. laws Laws made by newton
- 9. a set of criteria
- 13. the great size of something
- 14. regular path
- 15. when two things rub together
- 16. what's around you?
- 17. how heavy something is
- 18. a form of energy that an object or a particle has by reason of its motion
Down
- 1. weight
- 3. the energy that is stored in an object
- 5. a planet containing humans
- 7. what do you do when you speed a car?
- 10. to make something happen
- 11. swiftness
- 12. the top of something
- 17. doing successfully