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A particle moves along a straight line p...

A particle moves along a straight line parallel to x-axis at a distancce `d = 3`m from it, with constant speed of `v = 3 m//s`. Another particle stats from the origin with constant acceleration `a = 4 m//s^(2)` at an angle `theta` with y-axis along a straight line at the instant the first particle crosses y-axis. Find 'theta' such that the two particle collide.

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