Find the terminal velocity of solid sphere of radius 0.1 m moving in air in vertically downward direction. `(eta=1.8xx10^(-5)(Ns)/(m^(2))`, density of sphere `=1000(kg)/(m^(3))` and `g=10(m)/(s^(2)))`
A. `2(m)/(s)`
B. `1.2(cm)/(s)`
C. `4(cm)/(s)`
D. none of these
