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Posted by on Monday, May 14, 2012 at 10:49am.

A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore?

  • physics - , Monday, May 14, 2012 at 3:14pm

    v=sqrt(30²+5²) =30.4 km/h

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