forces

How does friction affect speed?

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

The rougher the surface, the faster an object will travel over the surface.

• True
• False

On which surface will a toy car travel the furthest?

• Carpet
• Polished Wood
• Ice

If you kick a ball, what stops the ball?

• the grass

• sand

• your foot

• friction

Which is easier to skate on?

• ice

• sand

Rougher surfaces have ...

• greater friction
• less friction
• the same level of friction

Friction is a force created by-----

• pushing

• rubbing

• gravity

What does friction cause?

• It makes things speed up.

• It makes things slow down or stop.

• It make things fall to the ground.

Without friction a toy car would ----

• keep going and going.

• stop right away.

• stay at rest all the time.

What surface would make the least friction for a soccer ball?

• a carpet

• the grass

• a gym floor