Physics-
General
Easy

Question

The distance between two particles moving towards each other is decreasing at the rate of 6 m divided by s e c. If these particles travel with same speeds and in the same direction, then the separation increase at the rate of 4 m divided by s e c. The particles have speeds as

  1. 5 m divided by s e c colon 1 m divided by s e c  
  2. 4 m divided by s e c colon 1 m divided by s e c  
  3. 4 m divided by s e c colon 2 m divided by s e c  
  4. 5 blank m divided by s e c colon 2 m divided by s e c  

The correct answer is: 5 m divided by s e c colon 1 m divided by s e c


    When two particles moves towards each other then
    v subscript 1 end subscript minus v subscript 2 end subscript equals 6(i)
    When these particles moves in the same direction then
    v subscript 1 end subscript minus v subscript 2 end subscript equals 4(ii)
    By solving v subscript 1 end subscript equals 5 and v subscript 2 end subscript equals 1 blank m divided by s

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