Transcript Blank Jeopardy Game - Mr. Medic

5 pt.
5 pt.
5 pt.
5 pt.
5 pt.
10 pt.
10 pt.
10 pt.
10 pt.
10 pt.
15 pt.
15 pt.
15 pt.
15 pt.
15 pt.
20 pt.
20 pt.
20 pt.
20 pt.
20 pt.
25 pt.
25 pt.
25 pt.
25 pt.
25 pt.
1-5
When energy is added to an
object, what kind of work is
done?
A)
B)
C)
D)
positive
negative
zero
not enough info
1-5A
When energy is added to an
object, what kind of work is
done?
A) positive
1-10
Force
Is the work done on the object
pictured below positive or negative?
distance
1-10A
Force
Is the work done on the object
pictured below positive or negative?
distance
Zero, since the force and
distance are at right angles.
1-15
How much work is done by a car’s
engine when it pushes with a force of
1450 N through a distance of 200
meters?
1-15A
How much work is done by a car’s
engine when it pushes with a force of
1450 N through a distance of 200
meters?
Work = Force x distance
Work = (1450 N)(200 m) = 290,000 J
1-20 expended when a
How many watts are
100-N person walks 3.5 meters up a
flight of stairs in 14 seconds?
1-20Aexpended when a
How many watts are
100-N person walks 3.5 meters up a
flight of stairs in 14 seconds?
Work = Force x distance
Work = (100 N)(3.5 m) = 350 J
Power = Work / Time
Power = (350 J)/(14 sec) = 25 Watts
4-20A
When jumping off of
a 3m tall garage, the
90 kg jumper lands on a pile of leaves. How
much work does the pile of leaves do on the
jumper?
4-20A
When jumping off of
a 3m tall garage, the
90 kg jumper lands on a pile of leaves. How
much work does the pile of leaves do on the
jumper?
W = ∆KE = -∆PEg = -mgh
W = - 90kg * 10m/s2 * 3m
W = -2700 J
2-5
Negative work is done
on a rolling
bowling ball. What happens to the
kinetic energy of the ball?
A)
B)
C)
D)
KE increases
KE does not change
KE decreases
not enough info
2-5A
Negative work is done
on a rolling
bowling ball. What happens to the
kinetic energy of the ball?
C) KE decreases
2-10
True or False:
It is possible for an object to
have a negative kinetic energy.
2-10A
True or False:
It is possible for an object to
have a negative kinetic energy.
False
2-15
What is the KE of a car with mass
1200-kg that is moving at 50 m/sec?
2-15A
What is the KE of a car with mass
1200-kg that is moving at 50 m/sec?
KE = 1/2mv2
KE = 1/2 (1200 kg)(50 m/s)2
KE = 1,500,000 Joules
2-20
Two identical cars are
traveling down the
road -- one moving at twice the speed of the
other. If both apply the brakes, what will
happen?
A)
B)
C)
D)
they both travel the same distance
the faster car will move twice as far
the faster car will move four times as far
not enough info
2-20A
Two identical cars are
traveling down the
road -- one moving at twice the speed of the
other. If both apply the brakes, what will
happen?
C) the faster car will move four times as far
2-25 is pushed by a
A rocket of mass 250-kg
thrust force of 10,000-N through 12
kilometers. How fast is it moving when the
engine shuts off?
2-25A is pushed by a
A rocket of mass 250-kg
thrust force of 10,000-N through 12
kilometers. How fast is it moving when the
engine shuts off?
Work = Change in KE ==> Fd = 1/2mv2
(10,000 N)(12,000 m) = 1/2 (250 kg)v2
v = √[2(10,000 N)(12,000 m)/250 kg]
v = 980 m/sec
3-5
How do you calculate gravitational
potential energy (GPE)?
3-5A
How do you calculate gravitational
potential energy (GPE)?
GPE = weight x height = mgh
3-10
What is the GPE of a 50-kg object
placed at a height of 10 m?
3-10A
What is the GPE of a 50-kg object
placed at a height of 10 m?
GPE = mgh = (50 kg)(10 m/s2)(10 m)
GPE = 5,000 Joules
3-15
If 32J of work is done on a spring
with a spring constant of 16, how
far is the spring stretched?
3-15A
If 32J of work is done on a spring
with a spring constant of 16, how
far is the spring stretched?
W = DPES = 32J
PES = ½ kx2
32J = ½ kx2
4 = x2
x = 2m
3-200.4m by a 24kg
A spring is compressed
mass. The mass is removed and the spring is
stretched 0.8m. How much energy is in the
spring?
3-20A0.4m by a 24kg
A spring is compressed
mass. The mass is removed and the spring is
stretched 0.8m. How much energy is in the
spring?
F = kx
24kg * 10m/s2 = k * 0.4m
k = 600 N/m
PES = ½ kx2
PES = 192 J
3-25
3-25A
How much power does the engine of a
2300-kg elevator put out if it climbs
through 38-m in one minute?
GPE = (2300 kg)(10 m/s2)(38 m) = 874,000 J
Power = GPE / Time = (874,000 J)/(60 sec)
Power = 14,567 Watts
4-5 during the Big
If the universe began
Bang 15 billion years ago with an
energy of 516 gadzillion Joules, how
much energy is there in the universe
right now?
4-5A during the Big
If the universe began
Bang 15 billion years ago with an
energy of 516 gadzillion Joules, how
much energy is there in the universe
right now?
516 gadzillion Joules
When a car slows4-10
down to a stop
where does all of its previous KE go?
A)
B)
C)
D)
it turns into heat
braking energy
into total mechanical energy
not enough info
When a car slows4-10A
down to a stop
where does all of its previous KE go?
A) it turns into heat
When a diver who4-15
weighs 650-N jumps
from a 10-m high diving platform, how
much KE do they hit the water with?
When a diver who4-15A
weighs 650-N jumps
from a 10-m high diving platform, how
much KE do they hit the water with?
GPEinitial = KEfinal
KEfinal = (650 N)(10 m) = 6500 J
4-20down on a
When jumping up and
trampoline, the 450-N jumper leaves the
trampoline with a KE of 3800 J. How high
do they travel?
4-20A
When jumping up and
down on a
trampoline, the 450-N jumper leaves the
trampoline with a KE of 3800 J. How high
do they travel?
KEinitial = GPEfinal = mgh
3800 J = (450 N) h
h = (3800 J)/(450 N) = 8.44 m
A 2-kg ball slides from4-25
rest down a 5-m tall
incline as shown. When it is halfway down,
how fast is it going?
A 2-kg ball slides from
rest down a 5-m tall
4-25A
incline as shown. When it is halfway down,
how fast is it going?
GPEinitial = KE + GPE
(2kg)(10m/s2)(5m) = 1/2 (2kg)v2 + (2kg)(10m/s2)(2.5m)
100 J = 1/2 (2kg)v2 + 50 J
50 J = v2
v = √(50) = 7.1 m/sec
5-5
What’s the anagram
of the following
phrase which is also the name of a
famous actor of that movie genre?
Old West Action
5-5A
Old West Action
Clint Eastwood
5-10
Name the character and movie
that produced this famous quote:
“A wizard is never late… he arrives
precisely when he means to.”
5-10A
Gandalf the Grey, in
LOTR: Fellowship of the Ring
5-15
th
26 ,
On October
2004, what
spacecraft made its closest
approach to Titan, the largest
moon of the planet Saturn?
5-15A
The Cassini-Huygens
Spacecraft
Actual Images
Titan Landing
5-20
In what year was the Great
Pyramid of Giza
constructed?
(±200 years)
5-20A
Roughly 2600 B.C.E.
5-25
Who is the vicious
ruler of the planet
Mongo?
5-25A
Ming the Merciless
Daily Double
How much power does the engine of a
2300-kg elevator put out if it climbs
through 38-m in one minute?