This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Physics JeopardyWork & Power
Simple Machines
Energy energy Extra credit on quiz questions
Q $100
Q $200
Q $300
Q $400
Q $500
Q $100 Q $100Q $100 Q $100
Q $200 Q $200 Q $200 Q $200
Q $300 Q $300 Q $300 Q $300
Q $400 Q $400 Q $400 Q $400
Q $500 Q $500 Q $500 Q $500
Final Jeopardy
$100 Work & Power
• How many joules of work are done on an object when a force of 10N pushes it 5m?
$100 Answer Work & Power
• 50 J
$200 Work & Power
• How much work is done on a 50 N rock that you carry horizontally across a 10 m room?
$200 Answer Work & Power
• Zero Joules of Work
$300 Work & Power
• How much power is expended if you lift a 50 N rock 10 m in 2 second?
$300 Answer Work & Power
• 250 Watts
$400 Work & Power
• Marissa is jogging up a winding trail on a mountain that has a height of 200 m. When she finally gets to the top a sign tells her that the trail has a distance of 800 m. If she has a mass of 48 Kg, how much Work has she done?
$400 Answer Work & Power
• 96000 Joules
$500 Work & PowerSam, who has a mass of 70Kg, races Jarvis, who
has a mass of 50Kg, up a hill with a height of 10m. If Sam gets up the hill in 5s and Jarvis gets
up the hill in 3.6s, who is more powerful?
$500 Answer Work & Power
• Sam’s power was 1400 Watts and Jarvis’s power was also 1400Watts, so they had the same amount of power.
$100 Question Simple Machines
The ratio of output force to input force of a simple machine is called the:
a) gear ratio
b) fulcrum
c) efficiency
d) mechanical advantage.
e) pivot point
$100 Answer Simple Machines
d) Mechanical advantage
$200 Question Simple Machines
How much less work does Jack do when he pulls a rope of a pulley down .7m and lifts a mass of 540N that is supported by 4 ropes?
$200 Answer Simple Machines
The work on both sides are the same.
$300 Question Simple Machines
If Erin can only push with a force of 8N, how far out must she be from the fulcrum of the lever if she is lifting a mass with a weight of 40N that is 30cm from the fulcrum?
$300 Answer Simple Machines
150cm
$400 Question Simple Machines
You build a lever to help you lift a tank. The tank weighs 4000 N, and you need to lift it 2 meters. You decide on a whim to analyze what you have done after lifting the tank and realize that you moved your end of the lever a whopping 20 meters, but had to apply a 500 N force. What did you find out the efficiency of your lever was?
$400 Answer Simple Machines
80 % efficiency
$500 Question Simple Machines
How high does a 300N weight get lifted if it is supported by a system of 4 pulleys like the system below, and Mark pulls the rope .5m?
300NIrvin
$500 Answer Simple Machines
.125m
$100 Question Energy
Potential energy is the energy an object has because of its ______.
a) Speed
b) location
c) size
d) temperature
e) density
$100 Answer Energy
• B) Location
$200 Question Energy
If an object has kinetic energy, then it also must have _______.
a) Impulse
b) momentum
c) acceleration
d) Force
e) None of the above
$200 Answer Energy
b) momentum
$300 Question Energy
A toy cart moves with a kinetic energy of 30J. If its speed is doubled, what will its kinetic energy be?
$300 Answer Energy
• 120J
$400 Question Energy
If Barbora, with mass of 46Kg jumps off the top of the high school, height: 20m, how much kinetic energy does she have when she has fallen a quarter of the distance?
$400 Answer Energy
• 2300 J
$500 Question EnergyA ball slides down the frictionless track shown below. The ball has no velocity at position F.
A
B
C
G
EF
a) To what point does the ball rise on the opposite incline?b) At what point(s) in the diagram is the speed at a maximum?c) At what point(s) is the kinetic energy at a maximum?d) At what point(s) is the speed zero?e) At what point(s) is the potential energy at a minimum?f) At what point(s) is the potential energy at a maximum?g) At what point(s) is the momentum at a maximum?
$500 Answer Energy
a) E
b) B
c) B
d) F & E
e) B
f) F & E
g) B
$100 Question energy
If you stand on top of a building and figure out that you have a PE of 4000 Joules, what would your KE be right before you hit the ground?
$100 Answer energy
KE = 4000 J
$200 Question energy
How much work does it take to lift a 400 N slab of brick a height of 5 meters?
$200 Answer energy
W = 200 J
$300 Question energy
How much kinetic energy do you have if you are running at a speed of 5 m/s and have a mass of 65 kg?
$300 Answer energy
KE = 812.5 J
$400 Question energy
What is your speed if you have a KE of 32000 J and a mass of 70 kg?
$400 Answer energy
v = 30.2 m/s
$500 Question energy
What is your KE half way down a hill if the hill has a height of 25 m and you have a mass of 55 kg?
$500 Answer energy
KE = 6875 J
$100 Question Other
LOL
$100 Answer Other
LOL
$200 Question Other
LOL
$200 Answer Other
LOL
$300 Question Other
LOL
$300 Answer Other
LOL
$400 Question Other
LOL
$400 Answer Other
LOL
$500 Question Other
Just sad….
$500 Answer Other
LOL
Final JeopardyWhy will a looped coil attached to a DC power supply not work as a good motor?