Work, energy, and cats

Classical Mechanics Level 1

Find the mass, in \(\text{kg},\) of a cat whose gravitational potential energy decreases from 300 \(\text{J}\) to 200 \(\text{J}\) over 2 \(\text{m}.\) Take the acceleration due to gravity to be \(g = 10 \frac{\text{m}}{\text{s}^2}.\)