Consider a drop of rain water having mass 1 g falling from a height of 1 km. It hits the ground with a speed of 50 m/s. Take 'g' constant with a value 10 m/s2.
The work done by the (i) gravitational force and the (ii) resistive force of air is :-
(1) (i) 1.25 J (ii) –8.25 J
(2) (i) 100 J (ii) 8.75 J
(3) (i) 10 J (ii) – 8.75 J
(4) (i) – 10 J (ii) –8.25 J
