The superheroine Xanaxa, with a mass of 67.9 kg, is in a hair–raising chase after the 71.7 kg archvillain Lexlax. She leaps from the ground to the top of a 163 m high building, then dives off and comes to rest at the bottom of a 15.9 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? loss gain What is the value of the net gain or net loss? Answer with a positive number. Assume g = 9.8 m/s 2 . net change in potential energy: J