B Quartz. Will be your answer of thia
Answer: Ain't its because how light the feather is ? It's not as heavy.
Explanation: With air resistance, acceleration throughout a fall gets less than gravity (g) because air resistance affects the movement of the falling object by slowing it down. ... Usually, resistance is not very high at low speed or for small or sharp objects (Google Source if needed to prove yours answer)
As per given condition we know that vertex angle of the cone is given as
so here we can say that vertex angle will remain constant
so here
now for the volume we can say
also we can say
so here we will have
now for volume flow rate
now plug in all data