6. Bicycles running across the streets are classified as
A. Fluid friction
B. Rolling friction
C. Sliding friction
7. When you try to push a heavy cabinet across the floor and it does not move, the friction that acts on it is
A. Rolling friction B. Sliding friction C. static friction
8. When you stop a bicycle with hand brakes, rubber pads slide against the tire surfaces. What kind of
friction stops the bicycle?
A. Fluid friction
B. Rolling friction
C. Sliding friction
9. Parts of machines are bathed in oil when they slide over other parts to avoid tearing. What friction
is involved? A. Fluid friction B. Rolling friction C. Sliding friction
10. What might happen to a rolling ball if there is no friction?
A. It will automatically stop
C. It will stop after some time
B. It might not stop until it strikes another object
