Answer:
55kg * 9.81m/s2 = 539.4 N
Step-by-step explanation:
It depends on the gravitational force pressing downward on them. The formula for this is W = mg, where W is weight (in Newtons), m is the mass of the object (in kilograms), and g is the force of gravity, which is ~9.81 m/s-2 on Earth.