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.
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ANSWER: usha travelled from a to b and back from A to B
Explanation:
pool length:90
time she swam:1 mins:60 secs.Still this much i calculate this question That's all i think
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