Terms
IS IT WORK?
Energy transfer
Energy types
More Math Practice
Random
100
What is the units for Energy / Work?
Joules
100
Sitting in a chair, taking a quizziz?
No, it is not work
100
An Otter eats a fish and then goes for a swim
Chemical to Kinetic
100
Which is considered renewable?
Oil
Gas
Solar
Coal
Solar
100
Charles is pulling on the water as he swims, using 600 N of force to travel a distance of 50 meters. How much work did Charles do?
KE = ½ mv2 GPE or Ug = mgh EPE or Ue = ½ kx2 g = 9.8 m/s2
W = Fd P = W/t P = Fd/t
30000 J
100
In Spongebob, what is Plankton's first name
Sheldon
200
True or False: "kinetic energy is inversely related to height. It is always true that the less height an object has, the more kinetic energy the object has.”
False: It does not depend on height at all
200
Pushing a cart of groceries to your car away from the store?
Yes, it is work
200
A ball rolls up a hill, slowing down as it goes, and then rolls back down, speeding up as it goes.
Kinetic Energy → Gravitational Potential Energy →
Kinetic Energy
200
Which energy type is directly harvested via the splitting of an atom causing a chain reaction?
Nuclear
200
If a 35 kg Labrador Retriever can run 15 m/s, how much Kinetic energy does he use?
KE = ½ mv2 GPE or Ug = mgh EPE or Ue = ½ kx2 g = 9.8 m/s2
W = Fd P = W/t P = Fd/t
KE = 3937.5 J
200
Tom Brady has won 7 super bowls. In how many has he been named super bowl MVP?
5
300
What types of energies make up Mechanical?
KE EPE and GPE
300
Trying to stop a moving boulder rolling down the street from hitting a car by pushing it in the opposite direction?
Yes, it is work
300
Plants use energy from the sun in the process of photosynthesis to make glucose, aka sugar.
Nuclear Energy → Light Energy →
Chemical Energy
300
Which of the following does not give off air pollution?
Coal, Gas, Nuclear or oil?
Nuclear
300
Audrey, while swimming the 100m butterfly, uses 450 N of force. If it takes her 60 seconds to swim this event…..
How much work does Audrey do? How much power does Audrey use?
KE = ½ mv2 GPE or Ug = mgh EPE or Ue = ½ kx2 g = 9.8 m/s2
W = Fd P = W/t P = Fd/t
W = (F) (d) = 45000J
P = (W) / (t) = 750 W
300
This is considered the "most popular game" in terms of sales. The origin of this game can be traced back to 1200 and 3 million copies are sold every year.
What is Chess?
400
When work is done on an object it will always be given more _________
Energy
400
Holding a textbook over your head for an entire minute, making sure the textbook doesn’t move?
No, it is not work
400
The Law of Conservation of Energy states
Energy can never be created or destroyed, just transformed from one form into another.
400
On a roller coaster, when is Gravitational Potential energy always the highest. When the cart was at the _________ point on the track. (Looking for a one word answer)
Highest (top)
400
Inspector Gadget uses his iconic “Go Go Gadget Legs!” to catch Dr. Claw. If the “Go Go Gadget Legs!” have a spring constant of 42 N/m and they stretch 5 meters, what is the elastic potential energy of the “Go Go Gadget Legs!”?
KE = ½ mv2 GPE or Ug = mgh EPE or Ue = ½ kx2 g = 9.8 m/s2
W = Fd P = W/t P = Fd/t
525 J
400
Dave portnoy (founder of Barstool Sports) reviews pizzas in which he always has one rule that he follows (that everyone knows). What is this rule?
“One Bite, Everybody knows the rules”
500
What is the definition of power?
The rate that work is done
500
Is gravity doing work if I push a tissue box accross my desk?
No, it is not doing work
500
In the picture , from C to D, say whether the type of energy increases decreases or stays the same?
1) Kinetic
2) Gravitational Potential
3) Thermal
4) Total Mechanical
5) Total
Energy
1)Decreases
2)Stays the Same
3)Increases
4)Decreases
5)Stays the Same
500
A CFL light bulb burns at 130 degrees when it is lit. An Incandescent Light Bulb burns at 250 degrees when it is lit.
Explain which lightbulb you think is the most energy efficient. (This means the bulb makes the most efficient use of any energy it uses to stay bright.) Use the following physics terms in your explanation: electrical energy, heat energy, light energy, and conservation of energy.
The CFL light bulb because we know that energy isn't created or destroyed just transferred from one form to another because of conservation of energy. So both light bulbs use electrical but the CFL uses less heat for more light.
500
At part A, Emily and her sled are at rest. If the Emily / sled combo has a mass of 75 kg, how fast must Emily be going at part B assuming that there is no friction?
KE = ½ mv2 GPE or Ug = mgh EPE or Ue = ½ kx2 g = 9.8 m/s2
W = Fd P = W/t P = Fd/t
mgh = 1/2 mv2 + mgh
(75) (9.8) (140) = (.5) (75 ) (v) 2 + (75) (9.8) (95)
Answer is 29.7 m/s
500
Name the TV Show that has this theme song!
New Girl