Physics 604 Module Test

Define friction.

• Friction is inversely proportional to the weight of the object.

• Friction is the resistance one surface or object encounters when moving over another.

• Friction is force divided by the surface area.

Which of these objects is a streamline shape?

• 
• 
• 
• 

__________ exists between a body and a surface when the body slides over it.

Choose the correct answer.

• Sliding friction

• Rolling friction

• Static friction

__________ exists when an object rolls over a surface.

Choose the correct answer.

• Static friction

• Rolling friction

• Sliding friction

How can you increase friction?

• apply oil

• pour water

• wear spiked shoes

• sandpaper

How can you decrease friction?

• Lubrication

• roughen the surface

• apply more force to the object

• wear spiked shoes

Friction causes your shoe to wear and tear.

• True

• False

Friction plays an important role in our lives.

• True

• False

Friction does not produce heat.

• True

• False

Which object will have more friction on a table?

• Ice

• Textbook