Physics, 26.08.2019 12:30 Justadumbemo

Provide a brief summary of your selected animal, and describe why it is not extinct.
92 points! answer the best or reported

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I'm going to say a Human.

In one simple statement, Humans have survived all of earth's devastation because of evolution. At one point it is believed that the earth had changing conditions including that some of the food that we hunted in waters became extinct. Then, as lack of food grew, We gained the ability to walk on land. As this happened, we began to adapt to our surroundings, including gaining the ability to walk on two legs and use tools

Answer from: angie2118

If we are talking about an animal, then we can select any organism from Kingdom Animalia, their size can be vary from little sponge to large whale.

Here, For our this particular question, we can take any insect like cockroach as an example. It is considered under phylum "Arthropods" & they are most abundant species on the planet. We know, there are about 1.8 million known organisms & this is very weird fact that Arthropods make 70% of them, so they are very away from extinct categories & hence can't be extinct in future as compared to other species

Hope this helps!

Answer from: Quest

overcharge is the right answer system

Answer from: Quest

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

$x(t)=ax(x-6)$

where $a$ is unknown. because the position is parabolic, there is symmetry about the midpoint at $t=3$ , and we know that

$x(3)=10\implies -9a=10\implies a=-\dfrac{10}9$

so that the position function is

$x(t)=-\dfrac{10}9x(x-6)$

which means the velocity is

$v(t)=\dfrac{\mathrm dx}{\mathrm dt}=-\dfrac{20}9x+\dfrac{60}9$

then the total distance traveled is

$\displaystyle\int_{t=0}^{t=6}|v(t)|\,\mathrm dt=\left\{\int_{t-0}^{t=3}-\int_{t=3}^{t=6}\right\}v(t)\,\mathrm dt=20$

so the total distance traveled is 20 m.

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

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Provide a brief summary of your selected animal, and describe why it is not extinct.
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