Newton's Third Law of Motion

xholonWorkbook.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--Xholon Workbook http://www.primordion.com/Xholon/wb/ (C) Ken Webb Mon Feb 13 2012 14:17:48 GMT-0500 (EST)-->
<XholonWorkbook>

<Notes><![CDATA[
Khan Academy
------------
Title: Newton's Third Law of Motion
Description: Every action has an equal and opposite reaction
Url: http://www.khanacademy.org/video/newton-s-third-law-of-motion?playlist=Physics
InternalName: newton-s-third-law-of-motion
YoutubeId: By-ggTfeuJU
Keywords: force, motion, physics

My Notes
--------
"To every action there is always an equal and opposite reaction: or the forces of two bodies on each other are always equal and are directed in opposite directions."

examples:
- Block; hand exerts a force on the block
  - block may be sitting on ice
  - the block exerts an equal and opposite force on the hand; the hand becomes compressed
- another example: pressing hand against my Desk
- walking on a beach
  - shoe exerts a force on the sand, creating a footprint
  - the sand exerts an equal and opposite force on me
    - the sand prevents me from falling toward the center of the Earth
- how rockets work
  - mass is expelled out the back of the rocket
  - the equal and opposite force propels the rocket forward
- astronaut drifting in space
  - how can astronaut get back to the space shuttle?
  - could remove something from space suit and throw/push it to exert a force on that mass
    - the astronaut will move in the opposite direction

]]></Notes>

<script implName="lang:python:inline:"><![CDATA[
print "height = 12.34 m"
]]></script>

<script implName="lang:javascript:inline:"><![CDATA[
print("height = 56.78 meters\n");
]]></script>

<_-.XholonClass>

  <!-- domain objects -->
  <PhysicalSystem/>
  <Block/>
  
  <!-- quantities -->
  <Height superClass="Length"/>
  
</_-.XholonClass>

<xholonClassDetails>
  <Block>
    <port name="height" connector="#xpointer(Height)"/>
  </Block>
</xholonClassDetails>

<PhysicalSystem>
  <Block>
    <Height>0.1 m</Height>
  </Block>
</PhysicalSystem>

<Blockbehavior implName="lang:python:inline:"><![CDATA[
# This works if pasted in as a last child of Block.
height.incVal(0.02)
print("Python wants something to do. Height:"   str(height))
]]></Blockbehavior>

<Blockbehavior implName="lang:javascript:inline:"><![CDATA[
// This works if pasted in as a last child of Block.
height.incVal(0.02);
print("JavaScript wants something to do. Height:"   height   "\n");
]]></Blockbehavior>

<Blockbehavior implName="lang:bsh:inline:"><![CDATA[
// This works if pasted in as a last child of Block.
height.incVal(0.02);
System.out.print("Java/Beanshell wants something to do. Height:"   height   "\n");
]]></Blockbehavior>

<Blockbehavior implName="lang:jruby:inline:"><![CDATA[
require 'java'
# This works if pasted in as a last child of Block.
$height.incVal(0.02)
puts "Ruby wants something to do. Height: #{$height}"
]]></Blockbehavior>

<Blockbehavior implName="lang:groovy:inline:"><![CDATA[
// This works if pasted in as a last child of Block.
height.incVal(0.02);
System.out.print("Groovy wants something to do. Height:"   height   "\n");
]]></Blockbehavior>

<SvgClient><Attribute_String roleName="svgUri"><![CDATA[data:image/svg xml,

]]></Attribute_String><Attribute_String roleName="setup">${MODELNAME_DEFAULT},${SVGURI_DEFAULT}</Attribute_String></SvgClient>

</XholonWorkbook>