Understanding Friction and Motion

Front

Friction is an example of _____________

Back

contact force

Front

What type of friction does not move?

Back

static

Front

How many types of friction are there?

Back

four

Front

What does it mean for an object to be in free fall?

Back

Gravity is the only force acting on the object.

Front

What is the force that opposes motion between two surfaces in contact?

Back

Friction

Front

What type of friction occurs when an object rolls over a surface?

Back

Rolling friction

Front

What type of friction occurs when an object slides over a surface?

Back

Sliding friction

Front

What is the force that pulls objects toward the Earth?

Back

Gravity

Front

What is the term for the maximum static friction force before an object starts to move?

Back

Static friction limit

Front

What is the relationship between mass and gravitational force?

Back

Gravitational force increases with mass.