A particle of mass m is moving along the x-axis with initial velocity . It collides elastically with a particle of mass 10m at rest and then moves with half its initial kinetic energy (see figure). If then value of n is .........
Option: 1 1
Option: 2 10
Option: 3 20
Option: 4 30
Also
Apply energy conservation
Now
From momentum conservation in the perpendicular direction of the initial motion
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