1.

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

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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