Parts D-FA) commander: v= -1.5 m/sMark: v= 1.5 m/sB) 600 kg m /sC) 72 N 4. In outer space, high above the surface of Mars, a daring rescue is attempted asastronaut Mark Watney hurtles at 3 m/s relative to Commander Melissa Lewiswho holds onto one end of an effectively massless tether. When Watneyreaches the tether he is traveling perpendicularly to it and is 5 m from Lewis;each of them have a mass of 80 kg.A) In the C.O.M. reference frame for this system, what are the speeds of each3 m/sastronaut when Watney reaches the tether?B) In this frame, what is the angular momentum of the two astronauts aboutthe c.o.M.?C) If Watney catches the tether, how much force must Lewis pull on it as they beginning orbitingtheir C.O.M.?D) To get a sense of the magnitude of this force, supporting what amount of mass on Earth requiresthis force?E) To rescue him, Commander Lewis then pulls in the tether until she and Watney are onlyseparated by 0.5m. Using the fact that angular momentum is conserved for the two-astronaut-and-tether system, what force does she then have to exert on the tether at this point?F) Supporting what amount of mass on Earth requires this force? Based on your answer does thisscenario seem realistic or more like a Hollywood movie?

(D) The amount of mass on Earth that requires this force is m = F/g m = 72/9.8 = 7.34 kg

Answered: In outer space, high above the surface…

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