Across
- 4. a force that opposes motion
- 6. ________ uses liquids under pressure to function
- 7. ________ ratio measures the amount by which a machine can multiply force
- 8. ________ uses air under pressure to function
- 10. a group of parts that perform a function
Down
- 1. how well an object uses energy
- 2. amount of simple machines
- 3. when a force acts on an object to make it move
- 5. ________ law states that pressure applied to an enclosed liquid is transmitted equally
- 9. ________ machine; made up of several simple machines
- 10. ________ ratio; measures how the speed of an object is affected by a machine