A Girl Wishes to Swim Across a River to a Point

question 11

Multiple Choice

A girl wishes to swim across a river to a point directly opposite as shown. She can swim at 2 m/s in still water and the river is flowing at 1 m/s. At what angle
$\theta$
with respect to the line joining the starting and finishing points should she swim?

• A) 30
• B) 45
• C) 60
• D) 63
• E) 90

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