A submarine is at 350 m below the sea level . It ascends for 10 seconds and then stops . Its final position is at 100 m below the

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1. Answer:

   We know,

   Distance = Speed * Time

   Distance covered by submarine = 350 – 100 = 250 m

   Time taken = 10 sec

   Therefore,

   Speed of submarine

   = Distance/Time

   = 250/10

   = 25 m/sec

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