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For motion of an object along x-axis, th...

For motion of an object along x-axis, the velocity V depends on the displacement x as `V = 3x^(2) -2x`. Accelertion at`x= 2m` is 10n where n is an integer. The value of n is `"____________"`.

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The correct Answer is:
8
`V=3x^(2)-2x` (Given)
`rArr a=(dV)/(dt) = (dV)/(dx).(dx)/(dt)= (d(3x^(2)-2x))/(dx)(V)=(6x-2)(3x^(2)-2x)`
Now, put `x=2`
we have `a=(6xx2-2)(3xx2^(2)-2xx2)=80m//s^(2)`
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