4 All of these A particle of mass m moving with certain velocity hits a sphere of mass m at rest elastically such that initial

Question

4 All of these A particle of mass m moving with certain velocity hits a sphere of mass m at rest elastically such that initial velocity of particle is not along the line joining their centre of mass If their final velocities are normal to each other then 1 m m 3 2m m 2 m 2m 1 m m

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