Need help with part 8.

Part 1 of 14 What is the relative vector / that points from the initial position of the star to the initial position of the planet? F - 1 -3e12 -3.00e+12 , 5e12 5.00e+12|, 0 / m Part 2 of 14 What is the magnitude of the relative vector from the star to the planet? 171 - 5.83e12 5.83e+12| m Part 3 of 14 What is the unit vector f that points from the initial position of the star to the initial position of the planet? f - 1 0.51 -0.515 , 0.86 7 0.86 , 0) Part 4 of 14 What is the magnitude of the gravitational force exerted by the star on the planet? IFI - 1.18e20 1.18e+20 N Part 5 of 14 What is the vector gravitational force exerted by the star on the planet? F = 1 0.60e20 6.00e+19 , -1.01e20 -1.01e+20 , 0 / N Part 6 of 14 What is the impulse due to the gravitational force during the time interval 9.0 x 10 s? F At = 1 5.4027 5.40e+27 , -9.1e27