a body covers half the distance with speed 10m/s and the next half of teh journey with speed 20m/s. the average speed of the body for the entire journey is??
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Answer: 13.333 m/s
Explanation:
Here the distance covered is same in both the cases.
Hence the average speed in this case = 2v₁v₂
v₁ + v₂
= 2 x 10 x 20
10 + 20
= 400/30
= 40/3
= 13.333 m/s
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