n athlete runs from one end to the other end of a semi circular tract whose radius is70m.What is the distance covered by the athlete and what is his displacement?
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Since the athlete is following a semi-circular path, the distance traveled shall be the perimeter of the semicircle:1/2 (2π r)=πr=3.14x70=219.8 m
where r is the radius of the semicircle along which the athlete running.
Displacement: Since the athlete is starting from one end of the semicircle and reaching the other end, his position is displaced by the radius of the semicircle, what is 70m.
• Distance travelled:219.8m
• Displacement=radius of the semicircle=70m
Explanation:
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