↵What is the escape velocity for a rocket on the surface of Mars? Mass of mars = 6.58 x 10^23 kg and radius of Mars = 3.38 x 10^6 m. li.li1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px 'Arial Narrow'; color: #000000; -webkit-text-stroke: #000000} span.s1 {-webkit-text-stroke: 0px #000000} span.s2 {font-kerning: none} ol.ol1 {list-style-type: decimal}