You can move the points 'P' and 'NCP' only when the animation is paused using the button on the top right of the applet.[br]Change the position of the point 'P'.[br]By moving the point 'NCP' to a convenient position on the magenta circle try to achieve the below goals. [br]a) 'A' moving ahead of 'V'.[br]b) 'V' moving ahead of 'A'.[br]c) 'A' and 'V' moving together (i.e. in-line).