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Two particles \( A \) and \( B \) start moving with velocities \( 20 \mathrm{~m} / \mathrm{s} \) and \( 30 \sqrt{2} \mathrm{~m} / \mathrm{s} \) along \( x \)-axis and at angle
P \( 45^{\circ} \) with \( x \)-axis respectively in \( x y \)-plane from origin.

W The relative velocity of \( B \) w.r.t. \( A \)
(1) \( (10 \hat{i}+30 \hat{j}) \mathrm{m} / \mathrm{s} \)
(2) \( (30 \hat{i}+10 \hat{j}) \mathrm{m} / \mathrm{s} \)
(3) \( (30 \hat{i}-20 \sqrt{2} \hat{j}) \mathrm{m} / \mathrm{s} \)
(4) \( (30 \sqrt{2} \hat{i}+10 \sqrt{2} \hat{j}) \mathrm{m} / \mathrm{s} \)
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