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PAPER 2
Forces
Contact and non-contact forces
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Created by
Grace Nunez
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Cards (8)
What is a force?
A force is a
push
or a
pull
that acts on an
object
due to the
interaction
with
another
object.
What do all forces have?
Have a
magnitude
and
direction.
Is force a vector or scalar quantity?
Vector
What is the unit for force?
Newton
(
N
)
What is a contact force?
where the
two
objects are
physically
touching.
For example
Tension
in a
rope.
What are the examples of contact forces?
Tension
,
Air
resistance,
Friction
,
Normal
contact
force
(
reaction
force).
What is a non-contact force?
Where the
two
objects are
physically
separated.
What are the examples of non- contact forces?
Gravitational
force,
Electrostatic
force and
magnetic
force (both can be
attractive
or
repulsive
).