NCERT Example 8.3 - Motion
Question: Usha swims in a 90 m long pool. She covers 180 m in one minute by swimming from one end to the other and back along the same straight path. Find the average speed and average velocity of Usha.
Answer: Usha's average speed is **3 m s⁻¹**, and her average velocity is **0 m s⁻¹**.
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