A feather of mass `5g` is dropped from a height. It is observed to fall down with a constant velocity. What is the net force acting on it?

A feather of mass 2 gram is falling vertically downwards with a constant velocity. What is the net force acting on it?

If a body move with uniform velocity , what is the net force acting on a body ?

An object falling through a fluid is observed to have an acceleration given by a=g-bv where g is the gravitational acceleration and b is a constant. After a long time it is observed to fall with a constant velocity. What would be the value of this constant velocity?

Give the magnitude and direction of net force on a drop of rain falling down with a constant velocity.