A boy starts moving along a circular path of radius 7m his displacement after it completed 1/2 revolution is
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22 m
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8
Distrance travelled=1/2×2pi×r
=pi×r
(Since,the distance travelled is circumference of this semicircle)
Displacement=2r
(Since,the shortest distance b/w initial and final point is the diameter[d] of the circle ,d=2r)
d=2r =7*2=14m
=pi×r
(Since,the distance travelled is circumference of this semicircle)
Displacement=2r
(Since,the shortest distance b/w initial and final point is the diameter[d] of the circle ,d=2r)
d=2r =7*2=14m
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2
14 m is the displacement of the boy
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