Two particles, one with constant velocity \( 50 \mathrm{~m} / \mathrm{s} \) and the other with u...

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Two particles, one with constant velocity \( 50 \mathrm{~m} / \mathrm{s} \) and the other with uniform acceleration \( 10 \mathrm{~m} / \mathrm{s}^{2} \), start moving simultaneously from the same place in the same direction. They will be at a distance of \( 125 \mathrm{~m} \) from each other after:
(A) \( 5 \mathrm{sec} \).
(B) \( 5(1+\sqrt{2}) \mathrm{sec} \).
(C) \( 10 \mathrm{sec} \).
(D) \( 10(\sqrt{2}+1) \mathrm{sec} \).
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