Question

content challenges ......
multiple choice write the letter of the term or phrase that best completes each statement.

1. the wheels of a bicycle move over the surface of the road because of

a. sliding friction.
b. gravity.
c. rolling friction.
d. air resistance.

Explanation:

When a bicycle wheel moves over a surface, it rolls. Rolling friction occurs when an object rolls over a surface. Sliding friction is when an object slides, gravity is a force pulling objects down, and air resistance acts against motion through air. Since the wheel is rolling, rolling friction is relevant.

Answer:

C. rolling friction