Across
- 2. a small wheel with groove around its outer edge .
- 4. tools which make our work easier and faster .
- 6. A slope which makes work easier .
- 8. a rigid bar resting on a pivot, used to move a heavy or firmly fixed load with one end when pressure is applied to the other .
- 9. strength or energy as an attribute of physical action or movement.
Down
- 1. a force that slows down a moving object .
- 3. when we push ,pull or lift something we apply .
- 5. a simple machines used to hold things tightly together .
- 7. the ability to do work .