Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1...
-
Upload
benjamin-johnston -
Category
Documents
-
view
214 -
download
0
Transcript of Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1...
![Page 1: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/1.jpg)
![Page 2: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/2.jpg)
Work and Energy:Work and Energy:
Jeopardy Review Game
![Page 3: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/3.jpg)
$2
$5
$10
$20
$1
$2
$5
$10
$1
$2
$5
$10
$1
$2
$5
$20
$5
$1
KineticEnergy
PotentialEnergy
Machines Work andPower
Bungee
![Page 4: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/4.jpg)
Calculate the kinetic energy of a 3 kg toy cart that moves at
4m/s.
![Page 5: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/5.jpg)
24 J
![Page 6: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/6.jpg)
A hammer falls off a rooftop and strikes the ground with a certain KE.
If it fell from a roof that was four times higher, how would its KE of
impact compare? Its speed of impact?
![Page 7: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/7.jpg)
KE would be 4X greaterSpeed would be 2X greater
![Page 8: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/8.jpg)
Answer this question in terms of KE. Why does a small,
lightweight car generally have better fuel economy than a big,
heavy car?
![Page 9: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/9.jpg)
Smaller mass means less kinetic energy for a given velocity.
![Page 10: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/10.jpg)
A rollercoaster starts with a speed of 5.0 m/s at a point 45 m above the bottom of the dip. Neglect friction,
what will be the speed of the rollercoaster at the top of the next
slope, which is 30 m above the bottom of the dip?
![Page 11: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/11.jpg)
18 m/s
1/2mv2 + mgh = 1/2mv2 + mghmasses cancel out – then you can solve for the velocity at the top of the second
hill.
![Page 12: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/12.jpg)
What is the minimum speed of the ball at the bottom of its swing
(point B) in order for it to reach point A, which is 1.0 m above the
bottom of the pendulum?
![Page 13: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/13.jpg)
4.5 m/s
![Page 14: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/14.jpg)
What will be the kinetic energy of an arrow having a potential energy of
50J after it is shot from a bow?
![Page 15: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/15.jpg)
50 J
![Page 16: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/16.jpg)
What is the potential energy of a spring that has a spring constant
of 250 N/m when it is compressed 3.0 cm?
![Page 17: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/17.jpg)
0.11 J
![Page 18: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/18.jpg)
A 3.0 kg stone is dropped from a height of 10.0 m, and strikes the
ground with a velocity of 7.00 m/s. What average force of air
friction acts on it as it falls?
![Page 19: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/19.jpg)
22.7 N
![Page 20: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/20.jpg)
If a spring is compressed 0.25 m and when it is released it causes a 5.0
kg block to move 0.45 m/s on a frictionless surface, what is the k
value of this spring? What force was exerted on the block?
![Page 21: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/21.jpg)
16 N/m4.1 N
![Page 22: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/22.jpg)
In what two ways can a machine alter an input force?
![Page 23: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/23.jpg)
By changing the magnitude or the direction.
![Page 24: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/24.jpg)
What is the ideal mechanical advantage of this ramp?
![Page 25: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/25.jpg)
5
![Page 26: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/26.jpg)
What is the ideal mechanical
advantage of this pulley system? If it requires an effort
force of 1500 N to lift the 500 kg Load
what is the % efficiency of the
pulley?
![Page 27: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/27.jpg)
IMA = 483% efficiency
![Page 28: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/28.jpg)
What is the IMA of each of the level systems shown?
![Page 29: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/29.jpg)
A = 1B = 2
C = 0.5
![Page 30: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/30.jpg)
Work is required to lift a barbell. How many times more work is
required to lift the barbell three times as high?
![Page 31: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/31.jpg)
Three times the work.
![Page 32: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/32.jpg)
How much power is required to do 100 J of work on an object in a time of 0.5 s? How much power is required if the same work is done in 1 second?
![Page 33: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/33.jpg)
200 W100 W
![Page 34: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/34.jpg)
True or False:A machine decreases the amount of
work done on an object.
![Page 35: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/35.jpg)
False! Less force over a greater distance.
![Page 36: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/36.jpg)
Chris’s car can go from 0 to 100 km/h in 10 s. If the engine delivered twice the power to the wheels, how
many seconds would it take?
![Page 37: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/37.jpg)
5 seconds
![Page 38: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/38.jpg)
If a car traveling at 60 km/h will skid 20 m when its brakes lock,
how far will it skid if it is traveling at 120 km/h when its
brakes lock?
![Page 39: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/39.jpg)
80 m
![Page 40: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/40.jpg)
Describe how energy is transferred during a bungee jump.
![Page 41: Work and Energy: Jeopardy Review Game $2 $5 $10 $20 $1 $2 $5 $10 $1 $2 $5 $10 $1 $2 $5 $20 $5 $1 Kinetic Energy Potential Energy MachinesWork and Power.](https://reader037.fdocuments.us/reader037/viewer/2022110101/56649ec65503460f94bd2704/html5/thumbnails/41.jpg)
Gravitational PE to Kinetic Energy to Spring Potential Energy then back to
KE and gravitational PE