During an ascent, a weather balloon carries a measuring instrument of mass 2.0 kg. The gravitational potential energy of the instrument increases by 600 J. Use g=10 N/kgg=10\ \mathrm{N/kg}g=10 N/kg. What is the vertical height gained by the instrument?
30 m30\ \mathrm{m}30 m
300 m300\ \mathrm{m}300 m
60 m60\ \mathrm{m}60 m
120 m120\ \mathrm{m}120 m