Q:

What are types of friction?

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Quick Answer

There are four general types of friction: static, kinetic, rolling and fluid. Friction is defined as the force that resists the motion of two objects sliding against each other.

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Full Answer

Static friction occurs when an object is forcefully moved along a surface and no movement takes place. The direction of the force is in the direction opposite of the motion. Kinetic friction takes place when an object just starts to move across another surface. Rolling friction is defined as the force that slows down the movement of a rolling object. Fluid friction is the restrictive force that slows down the movement of an object in liquid.

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Related Questions

  • Q:

    What are some examples of static friction?

    A:

    Some examples of static friction between two substances or objects are: glass on glass, tire on concrete, tire on snow, tire on a wet surface and steel on steel. Friction is the force between two objects in contact with each other that will resist an attempt to move them. Static friction is the force that will resist the movement up until it is overcome by a greater force and the motion occurs.

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  • Q:

    What is static friction?

    A:

    Static friction is the resistance to movement when two non-moving solid objects are in contact with each other. Static friction matches applied force and prevents motion. When the applied force overcomes static friction, the object starts moving, and at this point, static friction ceases and kinetic friction comes into play.

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  • Q:

    What is wind resistance?

    A:

    Wind resistance, a type of friction also known as drag, is the relative opposing force imparted on an object as it moves against still air. The wind resistance on an object depends on the square of its velocity, so as the object accelerates, its velocity and wind resistance increase.

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  • Q:

    What is a force that is opposite to the direction of motion?

    A:

    A force that is opposite to the direction of motion is friction. Friction can be kinetic or static. Kinetic friction acts on a moving object, while static friction acts on a stationary object.

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