Physics-
General
Easy

Question

A particle moves along a semicircle of radius 10 min 5 seconds. The average velocity
of the particle is

  1. 2 pi blank m s to the power of negative 1 end exponent  
  2. 4 pi blank m s to the power of negative 1 end exponent  
  3. 2 blank m s to the power of negative 1 end exponent  
  4. 4 blank m s to the power of negative 1 end exponent  

The correct answer is: 4 blank m s to the power of negative 1 end exponent


    V e l o c i t y blank o f blank p a r t i c l e equals fraction numerator T o t a l blank d i s p l a c e m e n t over denominator T o t a l blank t i m e end fraction
    equals fraction numerator D i a m e t e r blank o f blank c i r c l e over denominator 5 end fraction equals fraction numerator 2 cross times 10 over denominator 5 end fraction equals 4 blank m divided by s

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