Calculate the work done by gravity on an object of mass 100 kg falling a distance of 10 m.

The mass of the object is $m = 100 \, \text{kg}$.
The distance it falls is $h = 10 \, \text{m}$.
The acceleration due to gravity is approximately $g = 9.8 \, \text{m/s}^2$.

The work done by gravity ($W$) when an object falls through a height $h$ is given by the formula:

The work done by gravity is 9800 J.

The final answer is $\text{9800 J}$.