B. Identify what kind of friction is described in each sentence. Choose your answer from the box.
a. static friction
b. fluid friction
c. sliding friction
d. rolling friction
____6. It is produced when an object rolls over a surface.
____7. It is friction between moving objects and a liquid or between an object moving in the
____8. It occurs in a stationary objects or objects at rest.
____9. It occurs when two objects rub against each other.
____10. The boat sailing on the sea slows down. What kind of friction is acting on it?
a. static friction
b. fluid friction
c. sliding friction
d. rolling friction
____6. It is produced when an object rolls over a surface.
____7. It is friction between moving objects and a liquid or between an object moving in the
____8. It occurs in a stationary objects or objects at rest.
____9. It occurs when two objects rub against each other.
____10. The boat sailing on the sea slows down. What kind of friction is acting on it?
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TYPES OF FRICTION
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B. Identify what kind of friction is described in each sentence. Choose your answer from the box.
ANSWER
d. rolling friction 6. It is produced when an object rolls over a surface.
b. fluid friction 7. It is friction between moving objects and a liquid or between an object moving in the air.
a. static friction 8. It occurs in a stationary objects or objects at rest.
c. sliding friction 9. It occurs when two objects rub against each other.
b. fluid friction 10. The boat sailing on the sea slows down. What kind of friction is acting on it?
FRICTION
- Friction is a contact force that may arise between two surfaces that have a tendency to slide or are already sliding past each other.
- Friction opposes motion.
- Friction affects also the distance travelled.
- Friction acts always opposite the direction of an objects motion.
- Friction does not only occur is the surfaces of solid objects rubbing against one another.
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