Question

Choose the best answer.
Why is friction a contact force?

A. Friction pushes back on objects by touching them.

B. Friction is a noncontact force.

C. Friction pushes back on objects without touching them.

D. Friction makes objects fall down.​

Answer 1

Explanation:

Friction is a contact force when two surfaces interact. The second equation is the kinetic frictional force that is used when two surfaces are sliding against each other. ... The static friction case is similar for when the two surfaces are stationary relative to each other.

Answer 2

Answer: Friction makes poop spill

Explanation: This is nice.