Which statements correctly describe theories? Check all that apply. All theories that scientists could discover have already been written.
Theories develop over time as new Scientific evidence is discovered.
Parts of theories cannot be disproved, but new parts can be added.
Theories and laws are the same types of rules about how nature works.
Theories can be changed when new fields of scientific study develop.

Theories develop over time as new Scientific evidence is discovered.

A law is what happens, a theory trys to explain why it happens. For example there is a gravitational force (law), the theroy of relitivity trys to explain why. it says that gravity is a warpiture in space and time created by all matter in the univerese.

ᶦ ʷʳᵒᵗᵉ ᵃˡˡ ᵗʰᵃᵗ^

hope it helped.

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.