A particle of mass 1 g moving with a vel...

A particle of mass 1 g moving with a velocity `vecv_1=3hati-2hatj m s^(-1)` experiences a perfectly in elastic collision with another particle of mass 2 g and velocity `vecv_2=4hatj-6 hatk m s^(-1)`. The velocity of the particle is

`hati+2hatj-4hatk`

`hati-2hatj+4hatk`

`hati-2hatj-4hatk`

`hati+3.33hatj+4hatk`

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