A steel ball is dropped in a viscous liquid. The distance of the...

Velocity = Slope of distance
- Time graph Last portion of given graph is a straight line which indicates that velocity is constant, i.e. terminal velocity is reached.

From data of graph, Terminal velocity,
$v = \dfrac{{x}_{2} - {x}_{1}}{{t}_{2} - {t}_{1}} = \dfrac{0 . 4 - 0 . 3}{1 . 9 - 1 . 6}$

$= \dfrac{0 . 1}{0 . 3} = 0 . 33m / s$