At an instant particle-A is at origin and moving with constant velocity \( (3 \hat{i}+4 \hat{j})....

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At an instant particle-A is at origin and moving with constant velocity \( (3 \hat{i}+4 \hat{j}) \mathrm{m} / \mathrm{s} \) and particle-B is at
P
\( (4,4) \mathrm{m} \) and moving with constant velocity \( (4 \hat{i}-3 \hat{j}) \) \( \mathrm{m} / \mathrm{s} \). Then:
(1) at this instant relative velocity of B w.r.t. A is
\[
(\hat{i}-7 \hat{j}) \mathrm{m} / \mathrm{s}
\]
(2) at this instant approach velocity of A and B is
\[
3 \sqrt{2} \mathrm{~m} / \mathrm{s}
\]
(3) relative velocity of B w.r.t. A remains constant
(4) approach velocity of A and B remains constant


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