A Careful Photographic Survey of Jupiter's Moon Io by the Spacecraft

Multiple Choice

A careful photographic survey of Jupiter's moon Io by the spacecraft Voyager 1 showed active volcanoes spewing liquid sulfur to heights of 70 km above the surface of this moon.If the value of g on Io is 2.0 m/s²,estimate the speed with which the liquid sulfur left the volcano.

A) 260 m/s
B) 530 m/s
C) 790 m/s
D) 970 m/s