Weight = mass x gravity
where weight is measured in Newtons (N), mass is measured in kilograms (kg), and gravity is the acceleration due to gravity, which is approximately 9.81 m/s^2 on Earth.
So, we can rearrange the formula to solve for mass:
mass = weight / gravity
Plugging in the given values, we have:
mass = 540 N / 9.81 m/s^2 ≈ 55.0 kg
Therefore, the person's mass is approximately 55.0 kg.