A person swims 100 m in the first 40 s, 80 m in the next 40 sand 45 m in the last 20 s. What is the average speed.
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person swims 100 m in the first 40 s, 80 m in the next 40 s and 45 m in the last 20 s. What is the average speed? *(Ans: 2.25 m/s²)
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Ans: 2.25 m/s²)
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