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Final Jeopardy
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This is the unit for
work.
What is Joule?
These are the two
vectors that
determine work.
What are force and
displacement?
This is the amount
of work done in
pushing a cart 5m
with 3 N of force.
What is 15 J?
This is the amount
of work done in
carrying a 10 N
weight 5 m
horizontally.
What is 0 J?
This is the work
done in pushing a
box 5 m with a 2 N
force at an angle of
60 degrees.
What is 5 J?
This is another
name for the
energy of motion.
What is kinetic
energy?
This is the formula
for kinetic energy.
What is
KE =½
2
mv
?
This is what
happens to the
kinetic energy if
the mass is
doubled.
What is double?
This is what
happens to the
kinetic energy if the
speed (v) is
doubled.
What is quadruple
(increase 4 times)?
According to a
theorem of physics,
this equals the
change in kinetic
energy.
What is net work?
This is the energy
an object has
because of its
position.
What is potential
energy?
This is the energy
an object has
because of its
position near a
source of gravity.
What is
gravitational
potential energy?
This is the energy
an object gets by
compressing or
stretching
something.
What is elastic
potential energy?
This is the formula
for gravitational
potential energy.
What is
PEg= mgh
This is the formula
for elastic PE.
What is PEE= ½
2
kx ?
This consists of
kinetic energy and
mechanical forms
of potential energy.
What is
mechanical
energy?
This type of energy
is conserved only if
friction is
negligible.
What is
mechanical
energy?
This is how much
KE a 1 kg ball will
have after rolling
down a 1 m high
ramp, if we ignore
What is 9.8 J?
If there is no friction,
an arrow shot with
43 J of elastic PE,
will have this much
KE after it leaves the
bow.
What is 43 J?
This is the spring
constant of a spring
that stretches 2 m
with a force of 6 N.
What is 3 N/m?
This is the rate
that work is done
or energy is
transferred.
What is power?
This is the formula
for power that
involves work.
What is P = W/Dt ?
This is the formula
for power that
involves speed
(velocity)?
What is
P=Fv?
This is the unit of
power.
What is the watt?
Of more or less,
this is what
happens to power
if the same work is
done in less time.
What is more?
Make your wager
This is how high a
ball will rise if
thrown up at a
speed of 4 m/s?
What is 0.8 m ?