A body is moving along a circular path of radius(R). What will be the distance and displacement of the body when it completes half revolution?

The body would have completed a semi-circle

Then the distance would be the circumference of the semi-circle = πr

Also the displacement is the shortest distance travelled between the inital and final point =R +R = 2R

  • 90

Radius = R 

:. Distance travelled= 2*pi*r

 = (2*22/7*R)/2

  = (44R/7)/2

  = 44R/14

Displacement= Diameter

 = 2*r

  = 2R

  • 24
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