Explain the momentum of each ball after thrown will equal., Physics

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Consider a person having mass M and holding two balls every of mass m is at rest over a frictionless surface. Now the person throws one ball towards right direction with velocity " v " w.r.t himself . After 1 second he throws another ball towards left direction with velocity " v " w.r.t himself .

1) The final velocity of Man = 0

2) Center of mass would not change.

3) The momentum of each ball after thrown will be equal.

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