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  •  bus moving on a road (200 km) with velocity <img alt="\left(t+e^t\right)" src="https://entrancecorner.oncodecogs.co

A bus moving on a road (200 km) with velocity \left(t+e^t\right) . Acceleration of the bus at  t is equal to 20 seconds -

Option: 1

e^{20}


Option: 2

1+\frac{e^{20}}{2}


Option: 3

1+e^{20}


Option: 4

\frac{e^{20}}{2}


Answers (1)

best_answer

 Velocity of the bus =t+e^t

Now,

Acceleration =\frac{d v}{d t} =\frac{d}{d t}\left(t+e^t\right) \\


                      =1+e^t \\


 \left.\frac{d v}{d t}\right|_{\text {at } t=20 \mathrm{sec}} =1+e^{20} 

Posted by

Pankaj

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