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An athelete complete one round of …

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An athelete complete one round of a circular track of diameter 200m in 40 sec .what will be the distance covered and the displacement at the end of 2min 20 sec?

Posted by Tanu Juyal 4 years, 3 months ago

CBSE > Class 09 > Science

1 answers

Md Sahid 4 years, 3 months ago

Sol, The diameter of the circular track is given as 200m. That is, 2π= 200m from this radius is calculated as radius, r is equal to 100 m. in 40sec the athlete completes one round.so, in 2 minutes and 20 seconds, that is 140 2nd the athlete will complete =140 / 40 = 3.5 rounds One round is considered as the circumference of the circular track The distance covered in 140 second=2πr×3.5 =2×3.14×100×3.5 =2200m therefore for 3 complete rounds the displacement will be zero Displacement=diameter=200m Hence , the distance covered is 2200 metre and the displacement is 200 metre

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This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

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