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A ball with the initial velocity \(u = 3i + 4j \) collides with the smooth wall and rebounds with the final velocity \(v = 2i - 3j\). Find the coefficient of restitution for the collision.


Your answer can be represented as \( e \) = \(\dfrac{a}{b}\), where a and b are coprime numbers.

Enter your answer as \(a + b\).


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This is a part of my set Aniket's Mechanics Challenges. (All level questions)
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