Friction

Why is it easy to slip when there is water on the floor?

• The water is a lubricant and reduces the friction between your feet and the floor.

• The friction between your feet and the floor changes from kinetic to static friction.

• The water increases the friction between your feet and the floor.

• The friction between our feet and the floor changes from sliding kinetic friction to rolling kinetic.

Which of the following does not involve any friction?

• A bicycle rolling down a hill.

• A baseball player sliding into 2nd base.

• A driver falling through the air to a pool.

• All of the above experience some friction.

Which of the following is not a type of friction?

• fluid

• static

• lifting

• rolling

• sliding

An example of rolling friction is ______.

• Using oil to lubricate

• Wheel on your skateboard

• Dragging your sister across the floor on a blanket

• The little mermaid swimming through the ocean.

Which shows a greater friction?

• playing on a slide

• walking on a slippery floor

• pulling a sofa on a tiled floor

• pushing a table on a wooden surface

What is friction?

What are the types of friction?