To make sure the answer is correct
B: gravity is absent in space
Of the gravitational pull and other things like mass. Planet earth it,s self as you said sir.
The answer is C, because the water molecules are evaporating and the salt molecules are staying the same.
Answer:
So the conclusion is that in presence of air net force acting downward reduces for feather and hence falls slower than coin. But in absence of air resistance, net downward force is just equal to force due to gravity which is same for both coin and feather and hence they fall down at the same rate.
