Static, Sliding and Rolling Friction

Wheels on a skateboard most likely experience...

• Rolling Friction

• Sliding Friction

• Fluid Friction

• Static Friction

Sally experiences-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Wheels of a shopping cart experience-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Swimming fish experience-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

The rougher the surface, the faster an object will travel over the surface.

• True
• False

Rough surfaces have _____________ smooth surfaces.

• greater friction than

• less friction than

• the same level of friction as

Which type of friction does a plane experience when flying through the air?

• rolling

• fluid

• static

• sliding

A force that opposes motion between any surfaces that are in contact.

• gravity

• acceleration

• friction

• direction

What type of friction is the person working against when the boulder is NOT moving?

• fluid

• static

• rolling

• sliding