1.

An athlete runs along a circular track of radius of 100m and he completed 2 1/2 round,find the distance and displacement.​

Answer»

GIVEN:-

  • Radius of circular track = 100m.
  • Number of round taken by athlete = 2 ½ rounds.

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To Find:-

  • Distance covered by athlete
  • DISPLACEMENT covered by athlete

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Theory\Formula USED:-

  • Distance is the total length covered by BODY from initial point to final point.
  • Displacement is the shortest distance between final point and initial point.
  • Diameter = 2 × Radius
  • Circumference of circle = 2 π r

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Solution:-

➥ Circumference of the circular track

= 2 π r

= 2 × 3.14 × 100

= 618m

➥ Distance covered by athlete

= 2½ × 618

= 2.5 × 618

= 1545m

➥ Displacement

= shortest distance

= Diameter

= 2 × Radius

= 2 × 100

= 200m

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Answer:-

▪︎Distance covered by athlete is 618m.

▪︎Displacement covered by athlete is 200m.

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