What You Should Know About
The Physics of Driving

Codman Academy Charter Public School
Physics 10A | 2004-2005
Teacher: Regan Brooks
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Kinetic Energy
This page is all about Energy.
this image shows two little pieces of matter talking about kinetic energyWhat is Energy?
     Energy is the ability to doing work. Work is force times distance. Energy involves changes such as baking, and moving things such as boats and cars. It also helps our bodies function in many ways.

What is the law of conservation of energy and when does it apply?
     The law of conservation of energy states that energy cannot be created or destroyed. Conservation of energy does not involve saving energy. Using energy does not make the energy disappear but in fact changes it from one source of energy to another.

A car's engine burns gasoline, converting the chemical energy in gasoline into mechanical energy. Solar cells change radiant energy into electrical energy. Energy changes form, but the total amount of energy in the universe stays the same.

What are the two main forms of Energy? 
     Energy is found in different forms, such as light, heat, sound and motion. There are many forms of energy, but they can all be put into two categories, kinetic and potential. Kinetic energy involves motion––of waves, electrons, atoms, molecules, substances, and objects. Potential energy is stored energy and also the energy of position––gravitational energy. There are also several forms of potential energy.
this image is discribing the shorter terms for Kinetic energy

Some examples of the different forms that energy can take:
     Energy stored in bonds of atoms is chemical energy. Examples of stored chemical energy are Biomass, petroleum, natural gas, and propane.

     Energy stored in objects because of a force being applied is stored mechanical energy. Pressed springs and stretched rubber bands are examples of things that have stored mechanical energy.

    Nuclear Energy is energy stored in the nucleus of an atom––the energy that holds the nucleus together is Nuclear Energy. The energy can be released when the nuclei are combined or split apart. Nuclear power plants split the nuclei of uranium atoms in a process called fission.

    Energy which involves position or place is called Gravitational energy. A rock resting at the top of a hill has gravitational potential energy.

Photosynthesis and Energy:
     Photosynthesis is the process in which we get energy from the sun and which when combined with chemical energy creats sugar which to cars are gasoline also known as Petroleum, for example, was formed millions of years ago from the remains of ancient sea plants and animals.

The Formula for Kinetic Energy:
Kinetic Energy equals one half mass times velocity squared. This means that doubling velocity would quadruple the Kinetic Energy.
So, speeding is a pretty bad idea (in physics terms and in reality!).

For this page I give credits to:http://www.energyquest.ca.gov/index.html for there information

Examples of Fuel Effecient Cars:

This is a Cadillac X.L.R. which is a car with a convertible top and uses up not much fuel.

This is also an image of a Fuel Efficient Car, it has one door and fits only one person

This is another image of a car that doese not use up fuel

This is a fast car which goes on about a speed of  256.269 km/h.

image of  how people use fuels

Quiz

Quiz on Kinetic Energy: To take quiz online and get it graded, please click here!!

What source would the United States mostly consume energy from?
A. Coal
B. Natural gases
C. Propane
D. Petroleum

Kinetic energy is the same as potential energy.
A. True
B. False

Which kind of energy is not involved in photosynthesis?
A. Solar
B. Chemical
C. Nuclear
D. None of the above

What is an example of mechanical energy?
A. Plant collecting energy from the sun.
B. The body breaking down food to glucose.
C. Taking a walk in the park.
D. Two magnets attracting.

Energy can change forms.
(A) True
(B) False

What is an example of electrical energy?
A. Batteries powering a game boy.
B. Engine burning gasoline.
C. Jogging.
D. Dropping a bowling ball.


Energy is somthing that can be created and destroyed.
A. True
B. False

What is an example of renewable energy?
A. Coal
B. Gasoline
C. Wind
D. Propane

What is the difference between kinetic energy and potential energy?
A. Potential energy can only exist in magnets and kinetic energy exist in all forms of energy.
B. Kinetic energy only exists in the form of electricity and potential energy can exist in all forms of energy.
C. They are exactly the same thing.
D. Kinetic energy is energy in motion and potential energy is energy in a stored state.

Which of these are not an example of fossil fuels?
A. Natural gases
B. Coal
C. Gasoline
D. Hydro power



Experiment/Demo
This is a photo of a Title: Potential and Kinetic Energy Experiment: Can a slinky have both  
potential energy and kinetic energy?

 What you'll need for the experiment is a slinky some books or boxes which would be able to form a staircase.

What to do:
You will need to set up books and boxes so they are forming stairs (see picture). You will then put a slinky on the top of the stairs. Then you will let slinky go down to each of the next step and make it proceed to the floor.
 
Whats going on :
     When slinky is in motion it is demonstrating kinetic energy but it also has potential energy. When the slinky is on the ground is when it has no more potential energy or Kinetic Energy. At the top of the stairs is where the slinky has potential energy but does not have Kinetic energy.

What to notice :
     Even though the slinky is in motion and demonstrating kinetic energy it still has energy in potential form (energy in a the stored state for potential of doing work) until it's on the ground.

Further Questions:
    (1) What would happen if you stacked the books higher?
    (2) Do you think moving the books further apart would make the
         slinky have more or less potential energy?
    (3) What if you were to use thinner books? Would it make a difference in the slinky's movement down the line going from step to step?
     
Credits to : http://www.gpb.org/education/features/sep04/SirIsaac/daniel2.html

Kinetic Energy Resources

Story on Saving Energy
This sight involves saving energy and energy conservation and ect.
http://www.energyquest.ca.gov/story/chapter19.html

Stored energy and batteries
This sight involves food-another method of storing energy and ect, such as different types of batteries carry different energy, and how chemical reactions at times deal with batteriers
http://www.energyquest.ca.gov/story/chapter05.html

Fossil Fuels-coil,oil,and Natural Gas
Whit this sight you can learn about where fossil fuels, oil,coal, and refineries come from
http://www.energyquest.ca.gov/story/chapter08.html

Natural Gas Discription
This sight mainly focuses towards natural gas and what happens when natural gas is burned, and propane turns to liquid
http://www.energyquest.ca.gov/story/chapter09.html

Biomass Energy

This sights main focuse is how biomass works and ect.
CLICK HERE TO SEE A FLASH MOVIE
OF HOW BIOMASS POWER WORKS...

http://www.energyquest.ca.gov/story/chapter10.html

Credits: This website was created by John C. & Jose F.



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