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Sahay Sir > Question Answers > JEE Mains Physics 2002-2019 Solved Video Solutions > Practice Set 1 > A particle of mass m with an initial velocity ui^ collides perfectly elastically with a mass 3 m at rest. It moves with a velocity v j^ after collision, then, v is given by

A particle of mass m with an initial velocity ui^ collides perfectly elastically with a mass 3 m at rest. It moves with a velocity v j^ after collision, then, v is given by

A particle of mass m with an initial velocity ui^ collides perfectly elastically with a mass 3 m at rest. It moves with a velocity v j^ after collision then v is given by