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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 K.E. is

A

`9/4 J`

B

`9/2 J`

C

`1/2 J`

D

`3/2 J`

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