An alien space craft is out in space leaving an unknown planet. It detects the pull of gravity due to this unknown planet to be 115N. Later the the alien space craft operator rechecks the pull on the space craft. The new reading is 25N. By what factor did their distance change as they left this unknown planet?

the answer is b

explanation:

the correct choice is a .

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the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.