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6.Usha swims in a 90 m long pool.she covers 180m in one minute by swimming from one end to other and back along the same straight path.find average speed and average velocity of usha |
| Answer» 6.Usha swims in a 90 m long pool.she covers 180m in one minute by swimming from one end to other and back along the same straight path.find average speed and average velocity of usha | |