2 Astronaut Rescue In outer space, high above the surface of Mars, a daring rescue is attempted as astronaut Mark Watney hurtles at 3 m/s relative to Commander Melissa Lewis who holds on to one end of an effectively massless tether. When Watney reaches the tether he is traveling perpendicularly to it and is 5 m from Lewis; each of them have a mass of 80 kg. Problem 2.1. In the CoM reference frame for this system, what are the speeds of each astronaut when Watney reaches the tether? Problem 2.2. What is the angular momentum of the two astro- nauts about the гCOM? Problem 2.3. If Watney catches the tether, how much force FLewis must Lewis exert to pull on the tether as the two astronauts begin orbiting their CoM? Problem 2.4. To rescue him, Commander Lewis then pulls in the tether until she and Watney are only separated by 0.5m. What force does she then have to exert on the tether at this point? 3 m/s

Taking a frame attached to Earth as inertial, which of the following objects cannot have inertial frames attached to them, and which are inertial reference frames? (a) A car moving at constant velocity (b) A car that is accelerating (c) An elevator in free fall (d) A space capsule orbiting Earth (e) An elevator descending uniformly

You stand on the seat of a chair and then hop off. (a) Duringthe time interval you are in flight down to the floor, theEarth moves toward you with an acceleration of what orderof magnitude? In your solution, explain your logic. Modelthe Earth as a perfectly solid object. (b) The Earth movestoward you through a distance of what order of magnitude?

i AUTOMATEDLOGIC E Understanding Motion 2 Anide Pain After Running: Here's X % 180 Assignment 6- PYS 190, x O How to become a doer (and not x G freee reading of birth chart - Go X i webassign.net/web/Student/Assignment-Responses/subenit?dep-25909070&tags=autocaveequestion4212699 3 Apps O O MyN M O G B + O 9 M T A Mylih WB e P a Plab 9 Live TV| GSN S Nevada Scholarship. Nevada Women's F. E TE ww TE A1 195.0 kg car traveling initially with a speed of 25.000 m/s in an easteriy direction creshes into the back of a 8 R00.0 kg truck moving in the same direction at 20.000 m/s. The velocity of the car right after the collision is 18.000 m/s to the east. Before After (a) What is the velocity of the truck right after the collision? (Give your answer to five significant figures.) 20.939 v m/s east (b) What is the change in mechanical energy of the car-truck system in the Lollision? -13400 Your response differs from the correct answer by more than 10%. Double check your calculations. J (c) Account…