Force and Motion: Friction

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

• similar
• opposite
• parallel
• west

Tags

NGSS.3-PS2-1

Which of the following is NOT an example of friction?

• using the brakes on your bike to slow you down

• putting your hand out the window

• a satellite traveling through deep space

• a hockey puck going across an ice rink

A puck slides along an icy surface. What makes it slow down?

• It runs out of push
• It rubs against the ice
• It runs out of electricity

Tags

NGSS.MS-PS2-2

On which surface will a toy car travel the furthest?

• Carpet
• Polished Wood
• Ice

Tags

NGSS.MS-PS2-2

A type of friction that occurs when air pushes against a moving object causing it to negatively accelerate

• surface area
• air resistance
• descent velocity
• gravity 

Tags

NGSS.MS-PS2-2

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed

Tags

NGSS.MS-PS2-2

The force that acts in the opposite direction of motion when two surfaces come in contact. 

• Force
• Friction
• Static
• Kinetic 

Tags

NGSS.3-PS2-1

without friction, an object in motion would never stop

• true

• false

Tags

NGSS.MS-PS2-2

material with _______________ surfaces have less friction

• smooth

• rough

• both

How would the absence of friction affect a marble traveling on a long, straight path?

• The marble’s speed would decrease.
• The marble’s speed would increase.
• The marble would stop immediately. 
• The marble would remain at constant speed.

Tags

NGSS.MS-PS2-2