an athlete completes one round of a circular track of a radius r in 40 sec what will be the displacement for 50 sec
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Answered by
0
Answer:
track length = circumference of circle
circumference = 2πr
= 44r/7 m
speed = distance /speed
= 44r/7/40
= 44r/7*40
= 11r/70
time given is 50s
if the one circle completed in 40 sec then the player has completed one circle and he has moved with speed for more 10 sec
so displacement = speed × time = 11r/70×10
= 11r/7
Answered by
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Answer:
1.25
Step-by-step explanation:
Total time duration in consideration : 50 secs
No of complete rounds in this time = 50/40 = 1.25 rounds
Therefore, he will be exactly at the point where he started. Hence, his displacement will be 0, although he will cover a distance of 1.25 (2πR)
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