Potential energy is a stored energy, which is caused by the gravitational pull of the earth, that is why when you go up the potential energy will increase. to calculate the mass, just substitute the given to the formula and solve for m
PE = m x g x h 4620 = m x 9.8 x 8.4 m = 4620 / ( 9.8 x 8.4) m = 56.1 kg is thr mass of the man
Well since he tracked the person through the communication towers he was able to gather information, with this information we can solve and find out how far this person is.