By default, the speed of an animation is 80 inches per second if working in feet and inches, or 2.032 meters per second if working in metric units. You can speed up or slow down an animation by editing either the duration or velocity setting in a path’s properties. Note that a different speed can be set for each path in your drawing.
To change the speed of an animation:
Click on the path whose speed setting you want to change. The path is highlighted with blue grab handles.
Right-click and select Path Properties.
In the Path Properties dialog, edit either the Duration or Velocity value. The duration is based on the specified velocity and length of the path. Increasing the duration value will slow the animation down, and decreasing the duration value will speed it up. The velocity determines what distance in covered in one second. Increasing the velocity value will increase animation speed.
Click OK.
Note: The Speed setting affects only the output file. It does not apply to the preview.