Across
- 2. type of potential energy springs have
- 4. force applied through a distance
- 6. imaginary boundary
- 9. a device that changes the force or increases the motion from work
- 10. stored energy
- 12. ratio of output force to input force
- 13. simple machine such as an axe head
Down
- 1. simple machine such as a lever
- 3. combination of two or more simple machines
- 5. ratio of output to input work
- 7. unit of energy
- 8. energy from motion
- 11. ability to cause change