Question

Consider elastic collision of a particle of mass m moving with a velocity u with another particle of the same mass at rest. After the collision the projectile and the struck particle move in directions making angles {{\theta }_{1}}
and {{\theta }_{2}}
respectively with the initial direction of motion. The sum of the angles. {{\theta }_{1}}+{{\theta }_{2}},
is [UPSEAT 2004]
A) 45{}^\circ B) 90{}^\circ C) 135{}^\circ D) 180{}^\circ

Answer 1

Answer is attached below