Across
- 1. few moving parts
- 3. substance that reduces friction
- 7. equal and opposite reaction
- 13. goes in circle
- 15. pushing or pulling something
- 17. how fast something is
- 18. uses mechanical power
- 19. rate of doing work
- 21. rate of change
- 22. force exerted on machine
- 23. force exerted by machine
- 25. remain unchanged
Down
- 2. distance input force acts
- 4. more force means pushed faster
- 5. measure of energy transfer
- 6. increase with time
- 8. ratio of force the does work
- 9. rate work is done
- 10. friction from rolling
- 11. law of inertia
- 12. sub from velocity
- 14. rate of change of velocity
- 16. distance output force acts
- 20. caused by adhesion
- 24. there are four main types