5. [12 Points] DETAILS MY NOTES The radius of Mars (from the center to just above the atmosphere) is 3400 km (3400x103 m), and its mass is 0.6x1024 kg. An object is Eaunched straight up from just above the atmosphere of Mars. (a) What initial speed is needed so that when the object is far from Mars its final speed is 2500 m/s? vimual = E W5 (b) What initial speed is needed so that when the object is far from Mars its final speed is 0 m/s? (This is called the \"escape speed.\") Vescape = E m/s Additional Materials Lil eBook