Physics Ch 5

5. The stress applied to a material in compressing or squashing.
6. A measure of the stiffness of a solid material, defined as stress over strain in the elastic region.
7. The action or process of changing shape or distorting, especially through the application of pressure.
9. The principle stating that the force needed to extend or compress a spring is proportional to the distance.
11. The force that prevents two surfaces from sliding past each other.
12. Friction between two objects in motion relative to each other.
15. The relative deformation produced by stress.
16. The property of an object or material which causes it to be restored to its original shape after distortion.
17. The perpendicular contact force exerted by a surface on an object.
18. Stress that occurs when forces are applied parallel or tangential to a surface.
19. The maximum stress that a material can withstand without permanent deformation.
20. The constant speed an object reaches when the drag force equals the force of gravity.

1. The ratio of the frictional force between two bodies to the normal force pressing them together.
2. The force per unit area applied to an object in a direction perpendicular to the surface.
3. Resistance caused by the viscosity of a fluid in motion.
4. The force exerted by a fluid on an object moving through it, opposing the object’s motion.
8. Permanent distortion of a material in response to the application of a stress.
10. The resistance that one surface or object encounters when moving over another.
13. The limit within which the deformation of a material is directly proportional to the applied force.
14. The stress applied to a material in stretching or pulling.