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