Question

An object started travelling from one end of the
semicircular track and reached the other end.
the length of the track is 12.56 m calculate the
magnitude of its displacement.
O 4m
8m
O 12mm
2m​

Answer 1

circumference = 2 x pi x r

12.56 = 2 x 3.14 x r

12.56 = 6.28 x r

r = 12.56/6.28

r = 2

displacement = diameter of semicircle

displacement = 2 x r

Therefore, Displacement = 2 x 2 = 4

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