Across
- 8. the increase of length of a spring when a force is exerted on it
- 9. the surface of an object or person as seen from in front
- 10. a force that resists a motion and acts against that motion
- 11. way of representing the size, direction and point of application of a force as an arrow
Down
- 1. resistance that arises because a moving object has to push the air in front of it aside
- 2. an instrument with a helical spring that is used to measure forces
- 3. the force with which the earth attracts you and all the objects around you
- 4. resistance that arises when two surfaces move against one and other, such as a ski gliding over snow
- 5. the length of a spring that has not been extended
- 6. the sum of the forces acting on an object
- 7. a force that arises when the muscles in a body contract