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What is Friction?
A force between 2 surfaces that are sliding or trying to slide against each other.
What does friction produce?
Heat
Which of these materials do you predict would have the MOST amount of friction, Sand paper or Tile?
Sand paper
How does friction affect speed?
more friction decreases speed, or slow down and stop a moving object
T or F , The rougher the surface, the faster an object will travel over the surface.
False
Friction is a force that acts in an ___________ direction of movement.
opposite
Rougher surfaces have ...
greater friction
The amount of friction depends on
Types of surfaces
Which would create more friction? metal of carpet
carpet
A type of friction that occurs when air pushes against a moving object
air resistance
An example of useful friction
any
An example of not useful friction
any
How would the absence of friction affect a marble traveling on a long, straight path?
The marble would remain at constant speed.
What is the unit called that measures force?
Newton
Friction can be a problem, it can cause......?
wear and tear
A friction between a surface of a moving object and the water is called?
water resistance
