Violent gas eruptions have been observed on mars, where the acceleration due to gravity is 3.7 m/s 2 . the jets throw sand and dust about 75.0 m above the surface. (a) what is the speed of the material just as it leaves the surface? (b) scientists estimate that the jets originate as high-pressure gas speeds through vents just underground at about 160 km/h . how much energy per kilogram of material is lost due to nonconservative forces as the high-speed matter forces its way to the surface and into the air?