A particle of mass \( 2 \mathrm{~m} \) is projected at an angle of \( 45^{\circ} \) with horizon....

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A particle of mass \( 2 \mathrm{~m} \) is projected at an angle of \( 45^{\circ} \) with horizontal with a velocity of \( 20 \sqrt{2} \mathrm{~m} / \mathrm{s} \).
\( \mathrm{P} \)
After \( 1 s \) explosion takes place and the particle is broken into two equal pieces.
As a result of explosion one part comes to rest. Find the maximum height attained by the other part. (take \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) )


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