what is the problem with the design of the following experiment?

sandra has three dogs: a husky, a golden retriever, and a chihuahua. she wonders what types of food dogs like the most. she feeds the husky and golden retriever a bowl of fish flavored dog food in the morning. then she takes them on a long walk and feeds them chicken flavored dog food for lunch. then they rest at home for the afternoon, and she feeds them beef flavored dog food for dinner. she feeds the chihuahua a cheeseburger for every meal.

Sandra serves the chihuahua a cheeseburger in every meal so there is no other option available for the chihuahua. Because of that, Sandra finds it difficult to know the choice of the chihuahua.

Given that Sandra has a husky, a golden retriever and a chihuahua.  The husky and golden retriever has a set routine for all three meals of the day.

The husky and golden retriever has a bowl of fish-flavored food in their first meal. Then they go for walk and have chicken-flavored food for lunch. They take a rest in the afternoon and have beef-flavored food for dinner.

The chihuahua has only a cheeseburger in every meal. He does not go for walk or take a rest at home in the afternoon. He has no choice of food for the meals. In other words, the chihuahua has a monotonous routine for all meals of the day. So because of this, Sandra finds it difficult about the choice of the chihuahua.

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The chihuahua has no choice, so how can she determine what food the dog would prefer.

i'm only doing this for the points : (

explanation:

i'm only doing this the points

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.