n 3 of 10 The superheroine Xanaxa, who has a mass of 63.1 kg, is pursuing the 80.1 kg archvillain Lexlax. She leaps from the ground to Learning the top of a 155 m high building then dives off it and comes to rest at the bottom of a 15.1 m deep excavation where she finds Lexlax and neutralizes him. Does all this bring about a net gain or a net loss of gravitational potential energy? O gain loss By how much will gravitational potential energy Ug change? Answer with a positive number. Assume g = 9.81 m/s. U. =