public class PoliceChase {

    public static void main (String[] argv)
    {
	DrawTool.display ();
	DrawTool.setXYRange (0,10, 0,10);

	DrawTool.startAnimationMode ();

	// Police-car acceleration, velocity, distance.
	double accP = 1;
	double velP = 0;
	double distP = 0;

	// Speeding-car acceleration, velocity, distance.
	double accS = 0;
	double velS = 1;
	double distS = 3;

	double delT = 0.1;

	for (double t=0; t<=10; t+=delT) {
            // Calculation and display of the speeding car's position.
	    distS = distS + velS * delT;
	    DrawTool.setPointColor ("red");
	    DrawTool.drawPoint (distS, 0);

            // Calculation and display of police car's position.
	    velP = velP + accP * delT;
	    distP = distP + velP * delT;
	    DrawTool.setPointColor ("blue");
	    DrawTool.drawPoint (distP, 0);

            // Display the current time.
	    DrawTool.writeTopValue (t);

            // Pause for animation effect.
	    DrawTool.animationPause (100);
	}

	DrawTool.endAnimationMode ();
    }

}