An aeroplane files around a square field ABCD of each side 1000 𝑘𝑚. Its speed along 𝐴𝐵 is 250 𝑘𝑚 ℎ−1 , along 𝐷𝐴 100 𝑘𝑚 ℎ −1 . Its average speed (in 𝑘𝑚 ℎ −1 ) over the entire trip is a) 225.5 b) 175.5 c) 125.5 d) 190.5

April 14, 2022

by Ezee_Notes

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Physics Problems

Question :An aeroplane files around a square field ABCD of each side 1000 𝑘𝑚. Its speed along 𝐴𝐵 is 250 𝑘𝑚 ℎ−1 , along 𝐷𝐴 100 𝑘𝑚 ℎ −1 . Its average speed (in 𝑘𝑚 ℎ −1 ) over the entire trip is

(A) 225.5

(B) 175.5

(D) 190.5

Answer : option (D)

Solution :

An aeroplane files around a square field ABCD of each side 1000 𝑘𝑚. Its speed along 𝐴𝐵 is 250 𝑘𝑚 ℎ−1 , along 𝐷𝐴 100 𝑘𝑚 ℎ −1 . Its average speed (in 𝑘𝑚 ℎ −1 ) over the entire trip is