Friction Flashcard

Front

What is gravity?

Back

A force

Front

Without gravity we would ________.

Back

Float away

Front

How does friction affect speed?

Back

More friction decreases speed.

Front

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

Back

False

Front

On which surface will a toy car travel the furthest? Options: Carpet, Polished Wood, Ice

Back

Ice

Front

Rougher surfaces have ...

Back

greater friction

Front

Which of the following statements is false?

• Friction can only slow things down
• Friction is never useful
• Friction can stop things from moving

Back

Friction is never useful

Front

During the winter, roads may become dangerously icy and slick. So, some city workers spread a mixture of sand on the roads. What is the best explanation for doing this?

Back

Sand increases the frictional force between car tires and the roads.

Front

How does a child slow down a bike on a steep hillside?

Back

The brakes rub against the tires to increase friction to slow down the bike.

Front

Why did Student 2, wearing long pants, move down the slide more easily than Student 1, wearing shorts?

Back

less friction