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

I HAVE A TIME LIMIT

Question 5 A spaceship moves so that its distance from the centre of Earth triples. The force of gravity on the spaceship Not yet answered Select one: Marked out of 1.00 O a. becomes three times smaller. Flag O b. becomes nine times smaller. question O c. becomes nine times larger. O d. becomes three times larger.Question 6 An astronaut is standing on the surface of the Moon. Assume the Moon suddenly shrinks to one-half its original Not yet diameter, but that its mass remains unchanged. What will happen to the force of gravity acting on the astronaut? answered Marked out of Select one: 1.00 O a. It will become four times greater. Flag question O b. It will become twice as great. O c. It will remain unchanged. O d. It will become half as great