Physics

A man can row a boat at 13m/s in still water. If the aims at crossing to the opposite bank of a river flowing 5m/s, at what angle to the bank of the river must he row the boat?

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asked by Yemen
  1. draw a picture

    the cosine of the angle is ... 5 / 13

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    posted by R_scott
  2. Vr = Vb - 5i = 13 = Resultant velocity.
    Vb = 13 + 5i = 13.9 m/s[21o]. = Velocity of the boat.
    Direction = 21deg. N. of E.

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    posted by henry2,

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