Frictional Forces

Rougher surfaces have ...

• greater friction

• lesser friction

• the same level of friction

The use of lubricants in motor vehicles ______________

the excessive frictional force in the engine

compartment.

• reduces

• increases

• reuses

• enlarge

Tags

NGSS.MS-PS2-2

The amount of friction depends on the weight of the objects pressing together.

• True

• False

In this force diagram, which arrow is representing Friction?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-2

Look at the picture. The frictional force between two different pictures are different. Please explain!

Evaluate responses using AI:

OFF

Tags

NGSS.MS-PS2-2

When there is a greater force to an object, a greater frictional force is needed to move the object.

• true

• false

The type of force that opposes motion is called:

• magnetism

• friction

• gravity

• electric/static

By looking at the picture, what is the best conclusion?

• Friction is in the same direction as Motion

• The Friction force  is  opposite to the direction of  the motion force

• Friction does not count

• I forgot my I-pad

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What force ultimately slows the roller coaster to a stop?

• Applied

• Normal

• Friction

• Magnetic

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Name the missing force...

• frictional force

• weight force

• thrust

• buoyant force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2