Physics-
General
Easy

Question

Two stones of equal masses are dropped from a rooftop of height h one after another. Their separation distance against time will

  1. Remain the same  
  2. Increase  
  3. Decrease  
  4. Be zero  

The correct answer is: Increase


    h equals fraction numerator 1 over denominator 2 end fraction g t to the power of 2 end exponent
    h to the power of ´ end exponent equals fraction numerator 1 over denominator 2 end fraction g open parentheses t minus t subscript 0 end subscript close parentheses to the power of 2 end exponent
    h minus h to the power of ´ end exponent equals fraction numerator 1 over denominator 2 end fraction g left square bracket t to the power of 2 end exponent minus open parentheses t minus t subscript 0 end subscript close parentheses to the power of 2 end exponent right square bracket
    equals fraction numerator 1 over denominator 2 end fraction g open square brackets t to the power of 2 end exponent minus t to the power of 2 end exponent minus t subscript 0 end subscript superscript 2 end superscript plus 2 t t subscript 0 end subscript close square brackets
    increment h equals fraction numerator 1 over denominator 2 end fraction g t subscript 0 end subscript open parentheses 2 t minus t subscript 0 end subscript close parentheses
    increment h is increasing with time

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