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paper 2
forces
contact and non-contact forces
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emmanuella
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Cards (20)
What is a force?
A
push
or
pull
acting on an object
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What are the two components of a force?
Magnitude
and
direction
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What is the unit of force?
Newton
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How can forces be categorized?
Into
contact forces
and
non-contact forces
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What is a contact force?
Force when
two
objects are
physically
touching
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In a tug of war, what type of force is acting on the soldier?
Tension force
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How does friction act on an airplane landing on water?
It
slows down
the airplane
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What is air resistance?
A
contact force
acting upwards on a sky diver
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What is the normal contact force?
Upward
force
exerted
by a
surface
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What happens to the normal contact force when a lamp is on a table?
It balances the
weight
of the lamp
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What is a non-contact force?
Force when
objects
are
physically separated
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How does gravitational force act between the Earth and the International Space Station?
It
attracts
both
objects
towards
each other
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What is electrostatic force?
Force between two
charged
objects
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How do opposite charges interact in electrostatic force?
They experience an
attraction
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How do like charges interact in electrostatic force?
They experience a
repulsion
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What is magnetic force?
Force experienced by
objects
in a
magnetic field
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What will be covered in later videos regarding magnetic force?
More
details
about
magnetic
force
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What are the main types of forces discussed?
Contact forces
Tension
Friction
Air resistance
Normal contact force
Non-contact forces
Gravitational force
Electrostatic force
Magnetic force
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What are the characteristics of contact forces?
Occur when
two objects
are
touching
Examples include
tension
,
friction
, and
air
resistance
Normal contact force
acts
perpendicular
to the
surface
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What are the characteristics of non-contact forces?
Occur when objects are separated
Examples include
gravitational
,
electrostatic
, and
magnetic
forces
Can act over a distance without physical contact
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