Question

Which of the following statements is correct regarding friction acting on our foot while walking?

• A. Static friction is acting opposite to the direction you're walking.
• B. Static friction is acting in the direction you're walking.
• C. Kinetic friction is acting in the direction you're walking.
• D. Kinetic friction is acting opposite to the direction you're walking.

Answer 1

The correct option is B Static friction is acting in the direction you're walking.

While walking, we push the ground backwards. If there was no friction, our foot would slide backwards. To oppose this, friction acts forwards. Because our foot does not slip on the floor, the frictional force is static friction.