A particle of mass m is moving along the x -axis with initial velocity u ^ i . It collides elastically with a particle of mass 10m at rest and then moves with half its initial kinetic energy (see figure). If sin θ _ 1 =

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From momentum conservation in perpendicular direction of initial motion.

{mv}_{1}{sin \theta}_{1} = 10{mv}_{2}{sin \theta}_{2}

Given that \left(\dfrac{1}{2}{mu}^{2}\right)\dfrac{1}{2} = \dfrac{1}{2}{mv}_{1}^{2} \ldots \ldots . ( 2 )

<br />From equation (1) & (2)<br />

{sin \theta}_{1} = \sqrt{10}{sin \theta}_{2}

<br />

n = 10

A particle of mass m is moving along the x -axis with initial...

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