Understanding Friction

What would be a potential benefit of a world without friction for vehicles?

• Vehicles would move without slowing down.

• Vehicles would need more oil for engine parts.

• Vehicles would be harder to control.

• Vehicles would require more fuel.

How does kinetic friction affect a book sliding across a table?

• It speeds up the book.

• It changes the book's direction.

• It makes the book heavier.

• It slows down the book.

Why do musicians apply rosin to their bows?

• To change the color of the bow.

• To increase friction for better sound.

• To reduce the weight of the bow.

• To make the bow more flexible.

What role does static friction play when a ladder is leaned against a wall?

• It makes the ladder heavier.

• It changes the ladder's color.

• It helps the ladder slide down.

• It keeps the ladder from slipping.

Why is friction necessary for riding a scooter?

• To make the scooter slower.

• To make the scooter heavier.

• To prevent the wheels from spinning in place.

• To change the color of the scooter.