Result Display Options for Vectors
The vector display options are available only when the selected result quantity is Velocity. Click the arrow below 
Vectors on the Display Options group and then click 
Vector Options to open the Animation Options dialog box. Click to select the Vector Options tab:
Vectors on the Display Options group and then click Vector Options to open the Animation Options dialog box. Click to select the Vector Options tab:• Vector Options—The following buttons control the display of vectors:
◦ 
—Switches between playing or pausing the animation of vectors.
—Switches between playing or pausing the animation of vectors.◦ Count—Varies the number of vectors displayed.
◦ Width—Controls the width of the displayed vectors.
◦ Tail Length—Changes the length of the tail of a vector.