A particle is projected at an angle \( 60^{\circ} \) with speed \( 10 \sqrt{3} \mathrm{~m} / \ma...

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A particle is projected at an angle \( 60^{\circ} \) with speed \( 10 \sqrt{3} \mathrm{~m} / \mathrm{s} \), from the point \( A \), as shown in the figure. At the same time the wedge is made to move with speed \( 10 \sqrt{3} \mathrm{~m} / \mathrm{s} \) towards right as shown in the figure. Then the time after which particle will strike with wedge is
(a) \( 2 \mathrm{~s} \)
(b) \( 2 \sqrt{3} \mathrm{~s} \)
(c) \( \frac{4}{\sqrt{3}} \mathrm{~s} \)
(d) None of these
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