Friction
Wha t is f r ictio n ?
It is a force that happens when two
objects are touching and move across or
against each other.
THINK ABOUT IT !
F AB
=
F (Friction)
A (Reaction)
B (Action)
Action:
Man pushes on box
Why does an “Indian burn” hurt so badly?
Reaction:
Box pushes back
Static friction:
Between shoes and floor
F riction causes heat.. !
Have you ever tried to rub two sticks together to make a fire?
It takes a long time!
Challenge Question !
What modern technology do we have to make fire? Does it involve friction?
Circular
motion creates
friction
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