Term |
Definition |
traction |
The friction between two objects that keeps them from sliding across each other |
gravity
|
A force that attracts everything toward the center of the earth |
adhesion |
The sticking together of two different materials. |
cohesion |
When a material can stick to itself
|
lubricant |
A substance that reduces friction |
friction |
A force that holds back the movement of an object |
drag |
The friction that slows an object as it moves through air or water
|
aerodynamic |
A shape that allows an object to move through fluids and air without as much drag |
terminal velocity |
The maximum speed an object can fall; the speed limit for falling objects |
centripetal force |
A force that acts on a body moving in a circular path and is directed toward the center around which the body is moving |
law of universal gravitation |
The law that says the closer things are to one another, the more powerful the attraction. |