please. help mw with his physics 20 (grade11) quiz

I HAVE A TIME LIMIT

Question 2 An astronaut has a mass of 85.7 kg. She is in a spaceship above Earth, and has a weight of 643 N. The Not yet answered value of g (rounded to the nearest hundredth) at her location is m/s 2. Marked out of 1.00 Flag questionQuestion 3 The gravitational force of attraction between two spheres of mass 2.0 kg each, whose centres are separated Not yet answered by 2.0 m is a.b x 10-c. The values of a, b, and c, are Marked out of (Enter your values in order. For example, if you found the answer to be 1.2 x 10-15 you would enter 1215 in 1.00 the box.) Flag