Meg goes swimming on a hot afternoon. when she comes out of the pool, her foot senses that the pavement is unbearably hot. suppose meg wants to apply the scientific method to discover reasons for the hot pavement. what is the next step she should take?
a)analyze the data
b)ask questions
c)communicate the results
d)make observations

b) ask questions

Explanation:

Meg senses that pavement feels hot when she comes out of the pool. In order to discover the reason behind using scientific method, she should first formulate a question. Based on it should hypothesis and then design experiment to test the hypothesis. next step would be to make observations, collect data, analyze it and draw conclusions. The final step would be to communicate the results.

Thus, correct option is b.

i. like it i'm gonna edit it tomorrow

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.