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Lerok [7]
3 years ago
15

Why does earth need an atmosphere?

Biology
1 answer:
kifflom [539]3 years ago
8 0

i think it counts for all but mostly to protect the earth from direct sun radiation

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In any future studies, the same experiment would need to be done but with this added measurement on both the control group and the test subjects.
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Answer:

Assuming that the masses of the cars are the same

9 times

Explanation:

Kinetic energy can be computed using the formula:

KE = \dfrac{mv^{2}}{2}

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As you can see in your problem, the velocity of the the first car mentioned is 3 times faster.

Looking at the the formula, velocity is raised to two (2). So if we put it in terms of equations this is how it will look:

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KE=\dfrac{(m)(3v)^{2}}{2}

KE=\dfrac{(m)9v^{2}}{2}

The increase is by a factor of 9.

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