Escape Velocity Remembering that g GM we find the escape velocity GM from a planet of mass m and radius r to be: Vesc=2p (where= 6.67X 10-11 m3 kg 1s-2) Rp(m)M(kg)9p(m/s2)Vesc(m/s) Earth 6.378×1065.977×10249.81 11.2x103 Moon1.738×1067.352×10221.62 2.38×103 Jupiter7.150×1071900×10224.8 59.5×103 Sun 6.960×1081.989X1029274 195×103 Physics 121: Lecture 15, Pg 6Physics 121: Lecture 15, Pg 6 Escape Velocity Remembering that we find the escape velocity from a planet of mass Mp and radius Rp to be: (where G = 6.67 x 10-11 m3 kg-1 s -2 ). v GM R esc p p = 2 g GM RE = 2 Moon Earth Sun Jupiter Rp (m) Mp (kg) gp (m/s2 ) vesc(m/s) 6.378x106 5.977x1024 1.738x106 7.352x1022 7.150x107 1.900x1027 6.960x108 1.989x1029 9.81 1.62 24.8 27.4 11.2x103 2.38x103 59.5x103 195.x103