Review Very far from earth (at R=oo), a spacecraft has run out of fuel and its kinetic energy is zero. If only the gravitational force of the earth were to act on it (i.e., neglect the forces from the sun and other solar system objects), the spacecraft would eventually crash into the earth. The mass of the earth is M, and its radius is R. Neglect air resistance throughout this problem, since the spacecraft is primarily moving through the near vacuum of space. Find the speeds of the spacecraft when it crashes into the earth. Express the speed in terms of Me, Re, and the universal gravitational constant G. View Available Hint(s) & = Submit Part B Correct 2GM Re Sa = Previous Answers Now find the spacecraft's speed when its distance from the center of the earth is R=aRe, where the coefficient a 1 Express the speed in terms of s, and a. View Available Hint(s) Submit IVE Sc a Previous Answers Request Answer ? X Incorrect; Try Again; 25 attempts remaining