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<![CDATA[]]> HTML_EDITOR Intro Page true true Simulation of a car moving horizontally. A motion diagram is created as the car moves. A series of qualitatitive questions are asked. ]]> HTML_EDITOR Author true true Karim Diff Santa Fe Community College 3000 NW 83rd Street Gainesville, FL 32606 email: karim.diff@sfcc.edu phone: (352) 395-5591 ]]> 15 false VARIABLE_EDITOR Background variables true true sizescreen int nlinesvertical int nlineshorizontal int linex double [nlinesvertical] liney double [nlineshorizontal] xmin double ymin double xmax double ymax double delx double dely double double VARIABLE_EDITOR Tape Measure true true xb1 double yb1 double xb2 double polypoints int xpoly double [4] ypoly double [4] ytape double xdistance double distance_text String distance_value String dvalue double String double VARIABLE_EDITOR Simulation variables true true t double dt double timetext String label String framenumber double frame String tvalue double tlength String timevalue String tempstring String tempstring2 String tempdouble double view boolean view2 boolean double VARIABLE_EDITOR Car variables true true x double vx double ax double nballs int xball double [nballs] yball double show boolean [nballs] tvalues String [nballs] double CODE_EDITOR Init Page true true ODE_EDITOR diffeq true true t dt vx ax Euler CODE_EDITOR Evol Page true true

 4 ) {
_pause();
}


framenumber = framenumber +1;
frame = "Frame number: "+framenumber;
timetext = "" + ((int)(t*100))/100.0;
tvalue = timetext.length();
tlength = ""+tvalue;
if(tvalue == 4.0){
timetext = timetext + 0;
}
timevalue = "Time: "+timetext + " s";


if (framenumber == 10) {
int index =1;

if (show[index] == false){
xball[index]=x;
tempstring = ""+t;
tempstring2 = tempstring.substring(0,4);
tempdouble = Double.valueOf(tempstring2).doubleValue();
tempstring= ""+(Math.ceil(tempdouble*10)/10.0);
tvalues[index] = "" + tempstring.substring(0,3);
}
show[index] = true;
}

if (framenumber == 20.) {
int index =2;

if (show[index] == false){
xball[index]=x;
tempstring = ""+t;
tempstring2 = tempstring.substring(0,4);
tempdouble = Double.valueOf(tempstring2).doubleValue();
tempstring= ""+(Math.ceil(tempdouble*10)/10.0);
tvalues[index] = "" + tempstring.substring(0,3);
}
show[index] = true;
}

if (framenumber == 30) {
int index =3;

if (show[index] == false){
xball[index]=x;
tempstring = ""+t;
tempstring2 = tempstring.substring(0,4);
tempdouble = Double.valueOf(tempstring2).doubleValue();
tempstring= ""+(Math.ceil(tempdouble*10)/10.0);
tvalues[index] = "" + tempstring.substring(0,3);
}
show[index] = true;
}

if (framenumber == 40) {
int index =4;

if (show[index] == false){
xball[index]=x;
tempstring = ""+t;
tempstring2 = tempstring.substring(0,4);
tempdouble = Double.valueOf(tempstring2).doubleValue();
tempstring= ""+(Math.ceil(tempdouble*10)/10.0);
tvalues[index] = "" + tempstring.substring(0,3);
}
show[index] = true;
}


if (framenumber == 50) {
int index =5;

if (show[index] == false){
xball[index]=x;
tempstring = ""+t;
tempstring2 = tempstring.substring(0,4);
tempdouble = Double.valueOf(tempstring2).doubleValue();
tempstring= ""+(Math.ceil(tempdouble*10)/10.0);
tvalues[index] = "" + tempstring.substring(0,3);
}
show[index] = true;
}

if (framenumber == 60) {
int index =6;

if (show[index] == false){
xball[index]=x;
tempstring = ""+t;
tempstring2 = tempstring.substring(0,4);
tempdouble = Double.valueOf(tempstring2).doubleValue();
tempstring= ""+(Math.ceil(tempdouble*10)/10.0);
tvalues[index] = "" + tempstring.substring(0,3);
}
show[index] = true;
}


if (framenumber == 70) {
int index =7;

if (show[index] == false){
xball[index]=x;
tempstring = ""+t;
tempstring2 = tempstring.substring(0,4);
tempdouble = Double.valueOf(tempstring2).doubleValue();
tempstring= ""+(Math.ceil(tempdouble*10)/10.0);
tvalues[index] = "" + tempstring.substring(0,3);
}
show[index] = true;
}


if (framenumber == 80) {
int index =8;

if (show[index] == false){
xball[index]=x;
tempstring = ""+t;
tempstring2 = tempstring.substring(0,4);
tempdouble = Double.valueOf(tempstring2).doubleValue();
tempstring= ""+(Math.ceil(tempdouble*10)/10.0);
tvalues[index] = "" + tempstring.substring(0,3);
}
show[index] = true;
}


if (framenumber == 90) {
int index =9;

if (show[index] == false){
xball[index]=x;
tempstring = ""+t;
tempstring2 = tempstring.substring(0,4);
tempdouble = Double.valueOf(tempstring2).doubleValue();
tempstring= ""+(Math.ceil(tempdouble*10)/10.0);
tvalues[index] = "" + tempstring.substring(0,3);
}
show[index] = true;
}
]]>

CODE_EDITOR Constraints true true LIBRARY_EDITOR Lib Page true true true Elements.Frame Frame true true Elements.DrawingPanel DrawingPanel Frame west Elements.Image Image DrawingPanel Elements.Image car DrawingPanel Elements.Text time DrawingPanel Elements.ParticleSet balls DrawingPanel Elements.TextSet tvalues DrawingPanel Elements.Arrow Arrow DrawingPanel Elements.Text Text2 DrawingPanel Elements.Poligon Polygon DrawingPanel Elements.Particle ball1 DrawingPanel Elements.Particle ball2 DrawingPanel Elements.Particle distance_reading DrawingPanel Elements.Text distance_text DrawingPanel true Elements.Panel Panel Frame south Elements.Button Play Panel west Elements.Button Reset Panel center Elements.Button Step Panel east true Elements.Panel Panel2 Frame north true Elements.Panel Panel3 Panel2 west Elements.Slider Slider Panel3 west Elements.Field NumberField Panel3 center Elements.Label velocity Panel3 east true Elements.Panel Panel4 Panel2 east Elements.Button Graphs Panel4 center false Elements.Dialog Graph false Elements.PlottingPanel PlottingPanel Graph center Elements.Trace Trace PlottingPanel