What is the gravitational potential energy of a 60 kg person standing on the roof of a 10-story building (each story is 3 m high.)?

The gravitational potential energy of the person can be calculated as mgh, where m is the mass of the person (60 kg), g is the acceleration due to gravity (9.81 m/s^2), and h is the height of the building (10 stories * 3 m/story = 30 m). Plugging in the values, the gravitational potential energy is 60 kg * 9.81 m/s^2 * 30 m = 17,586 J.