In Example 13.2 (p. 345), if instead the rocket launched from the Earth at 12,000 m/s, what would happen once it reached a distance infinitely far away from Earth. Group of answer choices When this rocket is an infinite distance away from Earth, the rocket would have no kinetic energy and no gravitational potential energy The rocket would not be able to reach deep space at this launch speed When this rocket is an infinite distance away from Earth, the rocket would have some kinetic energy and some gravitational potential energy When this rocket is an infinite distance away from Earth,, the rocket would have some kinetic energy and no gravitational potential energy

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.