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Q: Why will friction always be present when two surfaces touch each other?
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What prevents surfaces in contact from sliding past each other?

Friction prevents surfaces in contact from sliding past each other. There are several types of friction including dry friction, fluid friction, lubricated friction, skin friction and internal friction.


When solid surfaces rub against each other this friction is called?

static friction


What kind of friction occurs when surfaces slide over each other?

kinetic friction


What is the friction that exits between a surface sliding on another surface is called?

If the two surfaces are moving relative to each other, then the friction between them is Kinetic Friction. Prior to the surfaces moving there was Static Friction between them.


When solid surfaces slide over each other what is the kind of friction that occurs?

Dry Friction


What kind of friction occurs solid surfaces slide over each other?

kinetic friction


What kind of friction occurs when a solid surfaces slide over each other?

Sliding friction


What kind of friction occurs when solid surfaces slide over each other?

Yes, rolling friction occurs when two solid surfaces slide over each other. This is true.


What is a friction?

The friction that two surfaces excert on each other when they rub against each other is called a friction.


What is when solid surfaces slides surfaces slide over each other the kind that occurs?

sliding friction.


What is the force that opposes motion between two surfaces that are touching each other?

Friction. Static friction.


A lower coefficient of friction indicates that the two surfaces in contact have less resistance?

Yes but make sure you are clear in your understanding between the coefficient of friction and the force of friction. The force of friction is the force that resists the motion of two surfaces moving against one another. The amount of friction is determined by the product of the coefficient of friction and the normal (perpendicular) force that is pressing the two surfaces together. The coefficient of friction is a unit-less constant, that indicates how two surfaces compare to two other surfaces that are being pressed together the same amount. If the normal force is the same on two pairs of surfaces the pair of surfaces with the lowest coefficient of friction will experience the lower force of friction.