Vocabulary
Energy
Work
Power
Off the Wall
100
A push or a pull
What is force
100
A diver on top of a diving board is an example of ______________________ energy.
What is potential energy
100
Two students who are similar in size walk up the same set of stairs. They are doing _________________ amount of work.
What is the same!
100
The two factors of power are work and ________________.
What is time.
100
Percent efficient gasoline engines today are.
What is 35%
200
Stored energy
What is potential energy
200
A car rolling down a hill is an example of _____________________ energy.
What is kinetic energy
200
Work = ____________________ x ___________________
What is FORCE x DISTANCE
200
Power is measured in _____________________.
What is watts.
200
The ratio of useful work output to total work input is called the _______________
What is efficiency?
300
The units of force
What is newtons
300
A person skiing down a slope is ______________________ potential energy, and ____________________ kinetic energy.
What is losing potential energy and gaining kinetic energy
300
Holding a stack of books - work or not?
What is not doing work
300
The _________________ amount of time it takes to do work, the more power is produced.
What is shorter
300
All simple machines ideally work on the principle that
What is Work(in) equals Work(out)
400
The energy of a moving object
What is Kinetic Energy
400
The unit of energy
What is joules
400
Pushing against a wall is an example of doing work. True/False
What is false - not moving over a distance!
400
Two cars that weigh the same race up the hill. Car 1 gets there twice as fast as Car 2. Which car had more power?
What is car 1
400
When are car's speed doubles the kinetic energy?
What is quadruples.
500
How much work is performed in a certain amount of time
What is power
500
The definition of energy.
What is the ability to do work
500
A monster truck and a golf cart climb up the same hill. Which does more work
What is the monster truck - because it weighs more!
500
Power = ___________________/ ___________________
What is WORK/ TIME
500
If an object has kinetic energy, then it also must have
What is momentum?
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