An athlete is moving around a circular track of a radius of 100 m in 5 minutes. Find his average speed when he completes two and a half revolutions. a. 5.23 m/s b. 314 m/s c. 80 m/s d. 1.33 m/s Plz tell me the answer About the author Alice
Answer: Time taken = 2 min 20sec = 140sec. Radius r = 100m. In 40 sec the athlete complete one round. So, in 140sec the athlete in 140sec = (2 π r) x(3.5) = 2x (22/7) x 100x 3.5=2200m. At the end of his motion, the athlete will be in the diametrically opposite position. Displacement = diameter =200m Explanation: Hope it is helpful for you please make me a brain list Reply
Answer:
Time taken = 2 min 20sec = 140sec.
Radius r = 100m.
In 40 sec the athlete complete one round.
So, in 140sec the athlete in 140sec = (2 π r) x(3.5) = 2x (22/7) x 100x 3.5=2200m.
At the end of his motion, the athlete will be in the diametrically opposite position.
Displacement = diameter =200m
Explanation:
Hope it is helpful for you please make me a brain list