4 years ago

Pleaseeee help!!!!! I will mark you as brainlinest for correct answer!!!!!!!!

1 answer:

3 0

Hello,

I think the answer is Insomnia

Hope this helpss have a wonderful dayy!!

~Girlygir101~

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Svetach [21]

The bus's position $x$ at time $t$ is

$x_{\rm bus}=\dfrac12\left(2\,\dfrac{\rm m}{\rm s^2}\right)t^2$

If we take the bus's rear's starting position to be the origin, then the position of the mate (?) is given by

$x_{\rm mate}=-9\,\mathrm m+\left(6\,\dfrac{\rm m}{\rm s}\right)t$

The mate draws level with the rear of the bus when $x_{\rm bus}=x_{\rm mate}$ :

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Drop the units to make things simpler:

$\dfrac22t^2=-9+6t\iff t^2-6t+9=(t-3)^2=0\implies t=3$

So it would take 3 seconds for the mate to catch up to the bus.

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