Tina moves along a circular track of radius 5m starting from point A. Find her distance and displacement
when she reaches point at B.
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Answer:
OA = BO = 5cm -----(given)
angle AOB = 90° ----(given)
l( arc AB) = angle AOB / 180 x π r
= 1/2 x 3.14 x 5
= 7.85 cm
in right angled triangle AOB by Pythagoras thrm,.
AB² = OA² + OB²
= 5² + 5²
=50
AB = 5√2
AB = 5 x 1.41
AB = 7.05 cm
distance = 7.85 cm
displacement = 7.05 cm
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