usha swims in a 90 m long pool. she covers 180 m in 1 minute by swimming from one end to other and back into the same path. find the average speed and average velocity of the body?
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Displacement is zero because Usha's final position and initial position are the same.
Average velocity=displacement/time=0
Average speed=total distance covered/total time taken
180/60=3 m/s
Average velocity=displacement/time=0
Average speed=total distance covered/total time taken
180/60=3 m/s
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