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A particle moves along a path y = ax^2 (...

A particle moves along a path `y = ax^2` (where a is constant) in such a way that x-component of its velocity `(u_x)` remains constant. The acceleration of the particle is

A

`2a^2u_xhatj`

B

`a^2u_xhatj`

C

`2au_x^2hatj`

D

`au_x^2hatj`

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