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A particle moves in the plane xy with co...

A particle moves in the plane xy with constant acceleration 'a' directed along the negative y-axis. The equation of motion of the particle has the form `y= px - qx^2` where p and q are positive constants. Find the velocity of the particle at the origin of co-ordinates.

A

`sqrt((asqrt(1+p^2))/(2p))`

B

`sqrt((asqrt(1+p^2))/(2q))`

C

`sqrt((asqrt(1+q^2))/(p))`

D

`sqrt((asqrt(1+p^2))/(q))`

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The correct Answer is:
A
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