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The potential energy of 1 kg particle is...

The potential energy of 1 kg particle is `[U(x) = (0.25 x^4) - (0.5 x^2) ]` J If total mechanical energy is 2 J, then maximum KE is

A

`1/2 J`

B

`3/2 J`

C

`9/4 J`

D

`9/2 J`

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