A stone of mass $m$ is kept stationary in water. It is then released and drops vertically through a distance $h$. The stone then attains a speed $v$. Part of the stone’s initial energy is passed to the water. During the fall, resistive forces make the temperature of both the water and the stone rise. Which expression represents the work done against the resistive forces?
- A$\frac{1}{2}mv^2$
- B$mgh - \frac{1}{2}mv^2$
- C$mgh$
- D$mgh + \frac{1}{2}mv^2$