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7 November, 08:58

What is the combined velocity of a boat traveling 20 km/hr East on a river that is flowing 15 km/hr West?

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  1. 7 November, 09:15
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    5 km/hr East

    Explanation:

    The resultant velocity when two objects go in opposite direction is given by the sum of the velocities. Given that the river current flows West at 15 km/h but the boat goes East at 20 km/hr, we take East as positive and West as negative. The resultant velocity will be

    20-15=5 km/hr

    Since velocity must have direction component, and we have final answer as positive, then the direction is East
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