Friction Force

Which of the following statements is false?

• Friction can only slow things down

• Friction is never useful

• Friction can stop things from moving

Movers slide a box down the ramp of a truck.
What helps slow the box as it slides to the bottom of the ramp?

• friction

• gravity

• inertia

• magnetism

Tags

NGSS.MS-PS2-2

On which surface will a toy car travel the furthest?

• Carpet

• Polished Wood

• Ice

Tags

NGSS.3-PS2-1

NGSS.3-PS2-2

Force that opposes movement between touching surfaces

• Gravity

• Weight

• Friction

• Air Resistance

We have fluid in our knees to reduce

• Gravity

• Weight

• Friction

• Air Resistance

The force of friction between SURFACES NOT IN MOTION

• Static Friction

• Sliding Friction (Kinetic Friction)

• Rolling Friction

The force of friction that AFFECTS SURFACES IN MOTION

• Static Friction

• Sliding Friction (Kinetic Friction)

• Rolling Friction

The force of friction when an object ROLLS FREELY OVER A SURFACE

• Static Friction

• Sliding Friction (Kinetic Friction)

• Rolling Friction

The friction force is a contact force.

• TRUE

• FALSE

A contact force between two surfaces in touch is called....................

• gravity

• friction

• inertia