Physics-
General
Easy

Question

A particle is moving with constant acceleration from A blank t o blank B in a straight line A B. If u blank a n d blank v are the velocities at A blank a n d blank B respectively, then its velocity at the midpoint c will be

  1. open parentheses fraction numerator u to the power of 2 end exponent plus v to the power of 2 end exponent over denominator 2 u end fraction close parentheses to the power of 2 end exponent  
  2. fraction numerator u plus v over denominator 2 end fraction  
  3. fraction numerator v minus u over denominator 2 end fraction  
  4. square root of fraction numerator u to the power of 2 end exponent plus v to the power of 2 end exponent over denominator 2 end fraction end root  

The correct answer is: square root of fraction numerator u to the power of 2 end exponent plus v to the power of 2 end exponent over denominator 2 end fraction end root


    We have standard result for this type of velocity
    v equals square root of fraction numerator u to the power of 2 end exponent plus v to the power of 2 end exponent over denominator 2 end fraction end root

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