An engineer investigated how the terminal velocity of a motorized test sled on a friction track varies with the horizontal towing force applied.
The engineer plotted the results on a graph, shown below, but did not finish drawing the line for towing forces larger than 5 N5\text{ N}5 N.
Estimate the terminal velocity for a towing force of 8 N8\text{ N}8 N.
Show how you obtain your answer.