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harshitha

· started a discussion

· 1 Months ago

review the answer (Question:157304.0)

as he follows alternative speed, how it comes 20*6 as the total distance?

Question:

An artist in a circus moves along the hexagonal path of each side 20 meters in such a way that for the first 20 meters he goes with a speed of 20 m/s and the next 20 meters with a speed of 10 m/s. Similarly he continues for the rest of the hexagonal path with the same alternating speeds i. e., 20 m/s and 10 m/s. The average speed of the artist per round of the circus is:

Options:
A) 13.33 m/s
B) 23.66 m/s            
C) \(39\cfrac{1}{3}\) m/s 
D)

15 m/s

Solution:

Average speed = Total distance/Total time 


(Hexagonal path has six sides) 

= \(\frac{6\times20}{9}\)= 13.33m/s

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