question_answer

Rain drops are falling with a constant speed by the time they reach the ground because

A)  Rain drops originate in outer space where the gravitational forces are negligible

B)  The force due to air resistance increases with the speed of the rain drops until it balances the gravitational force

C)  Rain drops are too light and hence not affected by acceleration due to gravity

D)  The force due to air resistance is constant and balances the gravitational force