Question

select all that apply
which everyday scenarios are examples of friction?
□ a deep canyon with a river at the bottom of it
□ sliding a book across a desk
□ tires gripping the pavement of a road
□ inflating a balloon by blowing into it

Explanation:

• Friction is a force that opposes the relative motion between two surfaces in contact.
• When sliding a book across a desk, there is friction between the book and the desk surface.
• When tires grip the pavement of a road, friction is involved (static friction when the tire is not slipping relative to the road surface, and kinetic friction if there is some slipping).
• A deep canyon with a river at the bottom is a geographical feature and not related to friction in the context of the force opposing motion.
• Inflating a balloon by blowing into it is related to air pressure and not friction.

Answer:

• sliding a book across a desk
• tires gripping the pavement of a road