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For a body travelling with uniform accel...

For a body travelling with uniform acceleration, its final velocity is `v=sqrt(180-7x)` , where x is the distance travelled by the body. Then the acceleration is

A

`-8m//s^2`

B

`-3.5m//s^2`

C

`-7m//s^2`

D

`180m//s^2`

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The correct Answer is:
B
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