1.

A cyclist moving on a circular track of radius40 m completes half a revolution in 40 s. Itsaverage velocity is(a) zero (b) 4 n ms (c)2 ms? (d) 8 T ms-​

Answer»
  • Given :

=> radius of circular track = 40m

=> time = 40 s

  • To Find :

=> Average velocity after half revolution

  • We know that :

=> Displacement after half revolution = 2r

=> Average velocity = d/t

  • Calculation :

=> Vav = d/t = 2r/t = 2×40/40 = 2 m/s

  • Answer :

=> Average velocity = 2 m/s



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