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When two surfaces rub together, the irregularities of one surface. Friction. The force that one surface exerts on another. Friction acts in a direction. Friction. Without friction, the object would continue to move at. The strength of the force of friction depends on two factors:.

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Presentation Transcript
friction

When two surfaces rub together, the irregularities of one surface

Friction

The force that one surface exerts on another

Friction acts in a direction

friction1
Friction

Without friction, the object would continue to move at

The strength of the force of friction depends on two factors:

friction2

When two surfaces rub together, the irregularities of one surface

Friction

get caught on those of the other surface.

The force that one surface exerts on another

when the two rub against each other is called Friction.

Friction acts in a direction

opposite to the object’s direction of motion.

friction3
Friction

Without friction, the object would continue to move at

constant speed.

The strength of the force of friction depends on two factors:

  • the type of surfaces involved and
  • how hard the surfaces push together.
different types of friction
Different Types of Friction

__________ Friction – when solid surfaces slide over each other. ( _____ Friction)

__________ Friction – when an object rolls over a surface. (_____ Friction)

_______ Friction – the friction that occurs when an object moves through a liquid or a gas. (______ Friction)

different types of friction1
Different Types of Friction

A liquid or gas is commonly used to

Lubricants change _______________ friction to ______________ friction.

different types of friction2
Different Types of Friction

Sliding

__________ Friction – when solid surfaces slide over each other. ( _____ Friction)

Most

Rolling

__________ Friction – when an object rolls over a surface. (________ Friction)

Some

Fluid

_______ Friction – the friction that occurs when an object moves through a liquid or a gas. (______ Friction)

Least

different types of friction3
Different Types of Friction

A liquid or gas is commonly used to

reduce friction; they are known as- Lubricants.

sliding

Lubricants change ___________ friction to __________ friction.

liquid