1 remove acceleration according to primary school teacher.

2 unit in km/h instead of m/s according to primary school teacher.

3 further bug reduction

4 [s]axis for x is further refine to follow

xming = Math.min(x1,xmin);

xming = Math.min(x2,xming);[/s] // for maximum view instead of autoscale which is suppose to be difficult for young minds

5 fix PY1[1] and PY2[1] at the top left corner to follow the distance of the rectangle

6 fix the time to reflect the distance as accurate as possible for given t = 0.00s

7 use // screen view

if(x1

if(x2

8 change context to cars (from microsoft clipart) as to travel in km/h

9 added town A and B selectable to a maximum of 10 to 1000 km to suit most problem.

10 time is input field to suit questions that require going backwards in time