Friction Flashcards
(10 cards)
To stop a moving object, what must happen
A force must act in the direction opposite to the direction of the motion
What is friction
The force that opposes the motion of an object
What types of friction are there
Static friction, sliding friction, air resistance, and rolling friction.
What is static friction
A force that must be overcome to start the object moving
What is sliding friction
When an object is sliding across a surface, like a book sliding on a table
What is air resistance
The resistance that pushes up on an object as it is falling
What is sliding friction
The contact between something rolling and the ground, like a wheel on the road
What is a lubricant
A material that reduces friction
Friction makes what possible
Motion
What type of friction makes it easier to move things
Rolling frction
