Physics

posted by Eduardo

a boat crosses a 2 km wide river by starting out at the south shore and heading directly for the north shore if the river flows at 0.8 m/s and the boat can go at 1.4 m/s in still water, where on the opposite shore will the boat land?

  1. Dr. Jane

    What direction is the river flowing?

  2. Eduardo

    I found the answer, it is 1142.86 meters.
    I assume that the river was flowing East.

    so, the angle = arctan( .8 / 1.4 )
    = 29.74 degrees.

    then tan (29.74) = offset / 2000 m
    = 1142.86 m

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