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2. A swimmer wants to swim across a river that rus east to west with a current of 0.5 m s1 and is 30 m wide. He plans to swim from the south bank of the river to the north bank and can swim at a steady speed of 2 m s-1, current (a) If he wants to arrive on the north bank directly north of his starting point (the point directly on the opposite side of the river), what angle relative to due North (0 in the diagram) should he choose to swim? (b) At what angle should he swim f he instead wants to minimize his time to cross the stream, and doesnt care where on the north bank he arrives? Give some justification for your answer, either in words or equations.
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