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A particle of mass 1g moving with a velocity stack u subscript 1 end subscript with rightwards arrow on top equals left parenthesis 3 i minus 2 j right parenthesis m s to the power of negative 1 end exponent experiences a perfectly inelastic collision with another particle of mass 2g and velocity stack straight u subscript 2 with rightwards arrow on top equals left parenthesis 4 straight j minus 6 straight k right parenthesis ms to the power of negative 1 end exponent .The velocity of the combined particle is

  1. i plus 2 j minus 4 k    
  2. i minus 2 j plus 4 k    
  3. i minus 2 j minus 4 k    
  4. i minus 3.33 j plus 4 k    

The correct answer is: i plus 2 j minus 4 k

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