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JEE Main2005PhysicsMotion in One DimensionActual

Two points A and B move from rest along a straight line with constant acceleration f and f ' respectively. If A takes m sec. more than B and describes ' n ' units more than B in acquiring the same speed then

Options

  1. A(f-f^ ) m^2=f f^ n
  2. B(f+f^ ) m^2=f f^ n
  3. C1 2 (f+f^ ) m=f f^ n^2
  4. D(f^ -f ) n= 1 2 f f^ m^2

Correct answer

D. (f^ -f ) n= 1 2 f f^ m^2

Step-by-step solution

aligned & v^2=2 f(d+n)=2 f^ d & v=f^ (t)=(m+t) f aligned eliminate d and m we get (f^ -f ) n= 1 2 f f^ m^2 .

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