Law of the Conservation of Energy
Potential Energy
Kinetic Energy
Vocabulary
Equations
100
What is the Law of the Conservation of Energy?
Energy cannot be created or destroyed.
100
What is potential energy?
The energy that an object has because of the position, shape, or condition of the object.
100
What is Kinetic Energy?
The energy of an object due to the object's motion
100
Define Force
Push or Pull of an object
100
W=6N*9m
W=54 Joules
200
Can mechanical energy change into non mechanical energy through chemical reactions?
Yes.
200
What is the formula of potential energy?
PE=mass * free-fall acceleration * height PE=mgh
200
Kinetic energy depends on what?
An object's mass
200
Define Work
The transfer of energy to an object by the application of force that causes the object to move in the direction of the force
200
P=100kg/20s
P=5 Watts
300
What kind of energy is Chemical energy?
What is potential energy.
300
Gravitational Potential depends on what?
mass and height
300
What is the formula of kinetic Energy?
KE=1/2*mv^2
300
Define Power
A quantity that measures the rate at which work is done
300
Ma=1.5m/5m
Mechanical Advantage =3.3m
400
How does the law of conservation of energy applies to the transformation of various forms of energy?
Any form of energy can be converted into another form and the total energy will remain the same.
400
The free fall acceleration number is always is?
9.8 m/s sqaured
400
What is the SI unit for Kinetic Energy
Joules
400
Define Mechanical advantage
A quantity that express how much a machine multiplies force or distance
400
PE=65kg*(9.8m/s^2)(35m)
PE=2.2*10^4 J
500
Does energy change form
Yes
500
Stretched bungee cords and compressed springs?
Elastic potential energy
500
Does Kinetic Energy depend on speed more than it depends on mass?
Yes
500
State the difference between simple and compound machine?
Simple machine one of the six basic types of machines; however, Compound machines are made up of two or more simple machines.
500
KE=1/2*44kg*31m/s
KE=2.1*10^4 J
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