Across
- 2. the force acting per unit area at right angles to a surface
- 4. the frictional force on an object moving through air
- 9. the rate of change of an object's velocity
- 11. the single force that has the same effect on a body or two or more forces
- 13. the ratio of a force to extension for a spring which obeys Hooke's Law
- 14. the speed of an object in a stated direction
- 16. a device used to measure the pressure difference between two points
Down
- 1. a quantity that has both magnitude and direction
- 3. the force that exists between any two objects
- 5. the force that acts when two surfaces rub over one another
- 6. the fixed point about which a lever turns
- 7. the product of an object's mass and its velocity
- 8. the increase in length of a spring when a load is attached
- 10. the downward force of gravity that acts on an object because of its mass
- 12. a force that causes a spring to extend
- 15. the ratio of mass to volume for a substance