Friction and Types of Friction

Frictional force depends on ____

• surface area in contact

• roughness of surface

• both a and b

• none of the above

Which of the following is an example of friction that is helpful?

• Brakes used on a bike

• Tires from a car on the road

• Tread on the bottom of your shoes

• All are examples that are helpful

There are _________ types of friction.

• 2

• 1

• 4

• 5

True or False: objects that are smooth have LESS friction than objects that are rough

• TRUE

• FALSE

Wheels of a shopping cart experience-

• Rolling Friction

• Sliding Friction

• Fluid Friction

• Static Friction

Tags

NGSS.MS-PS2-2

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

• similar

• opposite

• parallel

• west

Friction is an example of _____________

• contact force

• non contact force

• both of these

• none of these

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

• metal

• tile

• sand paper

• denim

Rough surfaces have _________

• greater friction

• less friction

• the same level of friction

When we rub our hands together _________.

• frictional force works between them

• energy is released

• our hands become warm

• all off the above

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5