Question

find distance and displacement when a boy runs along the circular path which is having the radius of 21 m in the following situation first question It take 1 complete round second question it take 2.5 long third questions it takes 3 upon 4 of round

Answer 1

Distance is the actual length of path covered.hence, distance in this case = 2-pi-r/2 = pi-rand displacement is the shortest length of path covered which in this case is the diameter = 2r

Answer 2

1 . complete round distance =2,πr
=2 ×21×22/7=132m
displacement = 0m

2. distance =2.5×132=305m
displacement =2r =42m

3 . . distance =132×3/4 =99m
displacement =√2×21 m
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