# Physics

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A swimmer, capable of swimming at a speed of 0.8 m/s in still water (i.e., the swimmer can swim with a speed of 0.8 m/s relative to the water), starts to swim directly across a 2.5 km wide river. However, the current is 0.91 m/s, and it carries the swimmer downstream.

• Physics -

and the question?

• Physics -

(a) How long does it take the swimmer to cross the river?

(b) How far downstream will the swimmer be upon reaching the other side of the river?

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