Explain how does a body attain terminal velocity when it is dropped from rest in a viscous medium Define - Physics - Mechanical Properties of Fluids

Question

Explain how does a body attain terminal velocity when it is
dropped from rest in a viscous medium Define terminal
velocityderive an expression for it Why air bubble in medium move
in what direction?

Shivani · Answer

when a body move downward in a liquid then on that body the
viscous force of liquid { in upward direction} , the byouant force
{in upward direction,} and the weight of the body {in downward
direction} these forces acts when these three forces cancel the
effect of each other than the body acquired terminal velocity
the constant velocity of the body in the liquid for some time is
known as terminal velocity

Explain how does a body attain terminal velocity when it is dropped from rest in a viscous medium. Define terminal velocityderive an expression for it.Why air bubble in medium move in what direction?