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a body is moving along a circular path 'r'. what will be the distance and displacement of the body when it completed half a revolution?​

Sagot :

Answer: Displacement is the shortest distance travelled from the initial point to the final point. After half revolution the displacement is the length of the diameter which is equal to 2r. Hence the displacement is 2r.
AL2006

After half of a revolution ...

==> Distance = π•r

==> Displacement = 2•r

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