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A particle moves \( 21 \mathrm{~m} \) along the vector \( 6 \hat{i}+2 \hat{j}+3 \hat{k} \), then \( 14 \mathrm{~m} \) along the vector
\( \mathrm{P} \) \( 3 \hat{i}-2 \hat{j}+6 \hat{k} \). Its total displacement (in meters) is

W
(1) \( 15 \hat{i}+2 \hat{j}+12 \hat{k} \)
(2) \( 9 \hat{\mathrm{i}}+12 \hat{\mathrm{k}} \)
(3) \( 9 \hat{i}+6 \hat{j} \)
(4) \( 24 \hat{i}+2 \hat{j}+21 \hat{k} \)
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