Across
- 2. A force that causes a spring to extend
- 4. the action of one body on a second body that causes its velocity to change
- 5. The product of a force and the time for which it acts
- 8. the force that acts when two surfaces rib over one another
- 10. The product of an objects mass and its velocity
- 11. SI unit of pressure
- 13. The property of an object that causes it to have a gravitational attraction for other objects ,and that causes it to resist changes in its motion
- 14. The ratio of force to extension for a spring that obeys Hooke's law
Down
- 1. The extension of an object proportional to the load producing it, provided that the limit of proportionality is not exceeded
- 3. the frictional force when an object moves through a fluid
- 6. The fixed point about which a lever turns
- 7. The downward force of gravity that acts on an object because of its mass
- 9. the ratio of mass to volume for a substance
- 11. The force acting per unit area at right angles to a surface
- 12. The speed of an object in a stated direction