Consider a drop of rain water of mass $1\text{g}$ falling from a height of $1\text{km}$. It hits the ground with a speed of $50{\text{ms}}^{-1}$. The work done by (i) gravitational force and (ii) resistive force of air is: ($g=10{\text{ms}}^{-2}$)

1. A
   (i) $1.25\text{J}$, (ii) $-8.25\text{J}$
2. B
   (i) $100\text{J}$, (ii) $8.75\text{J}$
3. C
   (i) $10\text{J}$, (ii) $-8.75\text{J}$
4. D
   (i) $-10\text{J}$, (ii) $-8.25\text{J}$