# Kinematics- Velocity at Origin

Classical Mechanics Level 3

A particle moves in a the place $$x$$-$$y$$ with constant acceleration a directed along the negative $$y$$-axis. The equation of motion of the particle has the form $$y=px-q{ x }^{ 2 }$$ where $$p$$ and $$q$$ are positive constants. Then the velocity of the particle at the origin is?

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