Question

A feather of mass 10g is dropped from a height . It is found to fall down with a constant velocity. What is the net force acting on it

Answer 1

if it is falling with constant velocity then acceleration must be zero.
gravity won't act.
so this would be a free fall and
force acting will be zero.

hope this helps. :)

Answer 2

Since velocity is constant

acceleration will be zero because acceleration = change in velocity divided by time
since there is no change in velocity acceleration is zero


we know force = mass * acceleration

since acceleration is zero
therefore force will be also zero