Across
- 1. it pulls downwards
- 2. rate at which work is done
- 6. it opposes motion
- 8. available but not being used
- 10. it causes acceleration
- 11. rate of change of velocity
- 16. towards the centre
- 17. not the same as weight
- 18. it has a parabolic path
- 19. about movement
Down
- 1. change in y over change in x
- 3. one part of
- 4. vector from point A to point B
- 5. not horizontal
- 7. it's less on the Moon
- 9. mass times velocity
- 12. useful output compared with total input
- 13. has no direction
- 14. it's a vector
- 15. a tight string has it