Question

4) What are the causes of errors in measurement? : A) Solve the following stepwise: (Any One): OA (2) 1) Usha swims in a 90 m long pool. She swims from one end of the pool to the other end and back along the same straight path and thus covers 180 m in one minute. Find the speed and velocity of Usha.​

Answer 1

Answer:

Speed = 3m/s ;  Velocity = 0m/s

Explanation:

Distance = 180 m

But for displacement, since returned back to same spot, so it is 0m

Speed = Dist./time = 180/60 = 3m/s

Velocity = Displacement/time = 0/60 = 0m/s

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