Friction Quiz
Quiz
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- In which situation is friction desirable?
- Sliding down a snowy hill
- Slipping on a wet floor
- Ice skating on an icy surface
- Walking on a dry pavement
- Which type of friction is involved when a parachute opens, slowing the descent of a skydiver?
- Air resistance
- Rolling friction
- Kinetic friction
- Static friction
- Which type of friction occurs between a rolling object and the surface it rolls on?
- Fluid friction
- Rolling friction
- Static friction
- Kinetic friction
- Which factor does not affect the force of friction between two surfaces?
- Temperature
- Surface area in contact
- Coefficient of friction
- Mass of the objects
- Which type of friction opposes the initial motion of an object at rest?
- Fluid friction
- Static friction
- Kinetic friction
- Rolling friction
- What is the angle at which an object on an inclined plane will start to slide called?
- Angle of repose
- Angle of incline
- Angle of friction
- Angle of incidence
- What is the relationship between the weight of an object and the friction it experiences?
- Friction decreases with weight.
- Friction increases with weight.
- Friction is inversely proportional to weight.
- Friction is independent of weight.
- Which surface combination typically produces the highest friction?
- Wood on wood
- Metal on metal
- Plastic on ice
- Rubber on glass
- Which of the following objects would experience the least amount of friction when sliding?
- A smooth metal block on a rough concrete surface
- A smooth metal block on a smooth metal surface
- A rough wooden block on a smooth metal surface
- A rough wooden block on a rough wooden surface
- Which factor affects the coefficient of friction between two surfaces?
- Temperature
- Pressure
- Velocity
- All of the above
- Which type of friction is involved when a boat moves through water?
- Rolling friction
- Fluid friction
- Static friction
- Kinetic friction
- Why do cars have grooves in their tires?
- To improve aesthetics
- To increase friction
- To reduce friction
- To enhance fuel efficiency
- Which statement best describes lubricants' effect on friction?
- Lubricants decrease friction.
- Lubricants change friction into a repulsive force.
- Lubricants have no effect on friction.
- Lubricants increase friction.
- Which statement is true regarding the coefficient of friction?
- It depends only on the mass of the object.
- It is a scalar quantity.
- It varies depending on the materials in contact.
- It is always constant for a given pair of surfaces.
- Which type of friction is typically the easiest to overcome?
- Kinetic friction
- Fluid friction
- Rolling friction
- Static friction
- What is the SI unit of friction?
- Newton (N)
- Meter per second (m/s)
- Newton-meter (Nm)
- Joule (J)
- What is friction?
- The force that repels objects away from each other
- The force that opposes the motion of objects
- The force that attracts objects to each other
- The force that causes objects to move faster
- When does friction increase?
- When the surfaces are smooth
- When the surfaces are lubricated
- When the surfaces are rough
- When the surfaces are wet
- Which of the following factors affect friction?
- Mass of the objects
- All of the above
- Surface area in contact
- Surface texture
- What happens to the force of friction when an object slides at a constant velocity?
- Friction increases.
- Friction remains constant.
- Friction decreases.
- Friction becomes repulsive.
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