a particle is moving along a semicircular path and covers distance of 7pie m. the displacement of a particle is
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Displacement: the length of the line connecting starting point and ending point ( in this case the diameter )
= 7x2 =14 m
Distance: actual length of the path the thing travels on ( in this case half of the circle circumference )
= pi x 7 = 3.14 x 7 = 21.98 m
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