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Vadim26 [7]
3 years ago
15

A car with mass m traveling at speed v has kinetic energy k. what is the kinetic energy of a second car that has the same mass m

and twice the speed of the first car? k 1.4 k 2 k 4 k
Physics
1 answer:
vampirchik [111]3 years ago
7 0
Kinetic energy, KE, is modeled by the formula KE =  \frac{1}{2}mv^2, where m is the mass in kg and v is the velocity in m/s.

In this scenario, mass and one-half are constant but the velocity changes. 

You can see that by squaring twice the velocity, that is equal to four times the original KE. Therefore, the answer is 4k.
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Answer:

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Parametric equations for given line are

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Explanation:

The vector equation of the line is given by

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At these points the vector equation for this line is:

\overrightarrow{r}=\overrightarrow{r_{o}}+t\overrightarrow{v}\\\overrightarrow{r}=+t

Parametric equations for given line are

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Answer:

t = 1.16 s.

Explanation:

Given,

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Time taken by the box to move without slipping is 1.16 s.

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