Friction & Surfaces

Question 1

A student rolls the same wooden block down three ramps that are covered with smooth plastic, rough sandpaper, and a carpet. Why does the block roll the slowest on the carpet?

Accepted Answer

Because the carpet is rough, it creates more friction that slows the block.

Answer

Because the block becomes heavier on the carpet, its increased weight slows it down.

Answer

Because the carpet is smooth, it creates less friction, which makes the block move slower.

Answer

Because the carpet is sticky, the block sticks to it and cannot move.

Question 2

A child pushes a toy car across two different surfaces. The first surface is a smooth kitchen tile, and the second surface is a thick carpet. Which of the following best describes how far the car travels on each surface?

Accepted Answer

The car travels farther on the smooth kitchen tile than on the carpet.

Answer

The car stops immediately on the smooth kitchen tile but rolls slowly on the carpet.

Answer

The car travels farther on the carpet than on the smooth kitchen tile.

Answer

The car travels the same distance on the smooth kitchen tile and on the carpet.

Question 3

A student rolls a small toy car across four different surfaces: a smooth wooden floor, a thick carpet, a sandy beach, and a grassy lawn. On which surface will the car travel the farthest distance before stopping?

Accepted Answer

smooth wooden floor

Answer

thick carpet

Answer

grassy lawn

Answer

sandy beach

Try three questions

A student rolls the same wooden block down three ramps that are covered with smooth plastic, rough sandpaper, and a carpet. Why does the block roll the slowest on the carpet?

A child pushes a toy car across two different surfaces. The first surface is a smooth kitchen tile, and the second surface is a thick carpet. Which of the following best describes how far the car travels on each surface?

A student rolls a small toy car across four different surfaces: a smooth wooden floor, a thick carpet, a sandy beach, and a grassy lawn. On which surface will the car travel the farthest distance before stopping?

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