A particle is moving at a speed of \( 5 \mathrm{~m} / \mathrm{s} \)...

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A particle is moving at a speed of \( 5 \mathrm{~m} / \mathrm{s} \) along east. After \( 10 \mathrm{~s} \) its velocity changes and becomes \( 5 \mathrm{~m} / \mathrm{s} \) along north. What
\( \mathrm{P} \) is the average acceleration during this interval?

W
(A) 0
(B) \( 1 / \sqrt{2} \mathrm{~m} / \mathrm{s}^{2} \) north west
(C) \( 1 / \sqrt{2} \mathrm{~ms}^{2} \) north east
(D) \( \sqrt{2} \mathrm{~m} / \mathrm{s}^{2} \) north east
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