Friction

The direction of the force of friction is always _____ the direction of motion

• similar to

• opposite

• unchanged in

• the same as

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

• metal

• tile

• sand paper

• plastic

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

On which surface would a toy car travel the furthest when pushed?

• ice
• carpet
• snow
• sand

Tags

NGSS.3-PS2-1

When we pour sand on an icy road, what force are we increasing to help cars stay on the road?

• electricity
• magnetism
• friction
• gravity

Tags

NGSS.MS-PS2-2

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed
• friction has no affect on speed

Tags

NGSS.MS-PS2-5

Rough surfaces have _________ compared to smoother surfaces.

• greater friction

• less friction

• the same level of friction

• no friction

Why is it harder for the boy in Image B to get down the hill?

• Motion
• Friction
• Work
• Displacement

Why is it important for basketball players to wear shoes with tread when playing?

• to increase the speed of the player

• to decrease the force between the player and the floor

• to decrease the amount of force needed for the player to move

• to increase friction between the floor and the player’s feet

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

• similar
• opposite
• parallel
• upward

Tags

NGSS.3-PS2-1