[Diagram: Bullet of mass 10g hitting a ball of mass 200g resting on a vertical post of height 20m. Ball lands at 30m, bullet at 120m. g = 10 m/s²] A ball of mass $200$ g rests on a vertical post of height $20$ m. A bullet of mass $10$ g, travelling in horizontal direction, hits the centre of the ball. After collision both travels independently. The ball hits the ground at a distance $30$ m and the bullet at a distance of $120$ m from the foot of the post. The value of initial velocity of the bullet will be (if $g = 10$ m/s² ) :

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360 m/s

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