Across
- 2. touching
- 4. a force that acts against the motion of an object
- 7. a flat surface that is raised on one end; an inclined plane
- 8. a force that pulls things toward Earth and gives them weight
Down
- 1. a force that happens when two things rub together
- 3. a simple machine that helps lift heavy things
- 5. the top or outside layer of something
- 6. brought into action; used