Solve these clues to fill the grid.
- A simple machine of the inclined-plane type consisting of a spirally threaded cylindrical rod
- 1 Across
- The tendency of a body to maintain its state of rest or uniform motion unless acted upon by
- 3 Across
- A push or a pull
- 6 Across
- A simple machine consisting of a wheel with a groove in which a rope can run to change
- 7 Across
- The use of movements to communicate familiar or prearranged signals
- 8 Across
- Attraction for iron
- 9 Across
- How fast something moves
- 11 Across
- A large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese
- 12 Across
- Hoist so arranged that a rope unwinding from a ___ is wound onto a cylindrical drum or shaft
- 2 Down
- A simple machine for elevating objects
- 4 Down
- A rate of increase of velocity
- 5 Down
- A simple machine that gives a mechanical advantage when given a fulcrum
- 10 Down