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An auto, starting from rest, undergoes constant acceleration and covers a distance of 1200 meters. The final speed of the auto is 60 meters/sec. How long does it take the car to cover the 1200 meters?

Respuesta :

Answer:

It will take 40 sec

Explanation:

We have given that auto is starting from rest so initial velocity u = 0 m/sec

And final velocity is given as v = 60 m/sec

Distance traveled by car s = 1200 m

According third equation of motion we know that [tex]v^2=u^2+2as[/tex]

So [tex]60^2=0^2+2\times a\times 1200[/tex]

[tex]a=1.5m/sec^2[/tex]

Now according to first equation of motion v = u+at

So [tex]60=0+1.5\times t[/tex]

t = 40 sec

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