Static Friction

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

• fluid

• static

• rolling

• sliding

_____________ friction acts on objects that are not moving.

• Sliding

• Rolling

• Static

• Fluid

There is less friction on snow (A) than on grass (B). What is true?

• Person A will slide faster than B.

• Person B will slide faster than A.

• They will slide at the same speed.

Tags

NGSS.MS-PS2-2

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

• gravity

• acceleration

• friction

• direction

Which type of friction is shown in the picture?

• fluid

• static

• rolling

• sliding

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Rough surfaces have _________ compared to smoother surfaces.

• greater friction

• less friction

• the same level of friction

Which of these materials do you predict would have the MOST amount of friction

• Metal

• Tile

• Sand Paper

• Denim

What type of friction will you see when an object that is still rests on top of another solid surface?

• Sliding

• Rolling

• Static

• Fluid

What is the primary role of static friction in everyday life?

• To prevent objects from sliding

• To increase the speed of moving objects

• To reduce air resistance

• To facilitate rolling motion

Which of the following factors does NOT affect the magnitude of static friction?

• The roughness of the surfaces in contact

• The normal force between the surfaces

• The surface area of contact

• The type of materials in contact