Please answer fully i will mark u as brianliest

The gravitational force does change believe it or not, but the explanation for this is that the Earth's orbit is an oval (or circle) the closer it nears itself to the Sun. The Sun's gravitational pull pulls the Earth to it, bringing it closer and as it reaches the other side, let's call this L; When it reaches L, it becomes the same gravitational pull reset as A is, and another section over the Sun, lets call this M; and when it reaches M, its the same pull as B.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)