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Friction and Air Resistance Guide
1.
2. Guide questions
What is friction?
What are the types of friction? How do
they differ from each other?
How do we describe friction?
3. Guide questions
What is air resistance?
How does a body attain terminal
velocity?
How do we increase/decrease friction?
4. Key terms
Friction force (Ff) – a force that tends
to oppose motion
Coefficient of friction (µ) – the ratio
of the friction force to the normal force
5. Key terms
Static friction – the type of friction
that exists between the contact surfaces
of two bodies at rest
Kinetic friction – the force that
opposes sliding motion
6. Key terms
Rolling friction – the force that
opposes rolling motion
Normal force (Fn) – the force pressing
two contact surfaces together
7. Key terms
Air resistance – the friction between
air and a body moving through it
Terminal velocity – the velocity
acquired by a freely falling body when
its weight equals the upward force
exerted by air