The components of velocity at \( B \) are shown in figure. At \( B \) the \( y \)-component of v...

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The components of velocity at \( B \) are shown in figure. At \( B \) the \( y \)-component of velocity remain unchanged.
Find velocity at \( B \)
(1) \( V \sqrt{1-\left(\frac{2 a}{d}\right)^{2}} \)
(2) \( V \sqrt{1+\left(\frac{2 a}{d}\right)^{2}} \)
(3) \( V \sqrt{1+\left(\frac{a}{d}\right)^{2}} \)
(4) \( V \sqrt{2+\left(\frac{2 a}{d}\right)^{2}} \)
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