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A swimmer, capable of swimming at a speed of 1.0 m/s in still water (i.e., the swimmer can swim with a speed of 1.0 m/s relative to the water), starts to swim directly across a 3.0kmwide river. However, the current is 0.91 m/s, and it carries the swimmer downstream.
(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?
 2 years ago
 2 years ago
A swimmer, capable of swimming at a speed of 1.0 m/s in still water (i.e., the swimmer can swim with a speed of 1.0 m/s relative to the water), starts to swim directly across a 3.0kmwide river. However, the current is 0.91 m/s, and it carries the swimmer downstream. (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?
 2 years ago
 2 years ago

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starfish33Best ResponseYou've already chosen the best response.1
Part A) the swimmer still swims across at 1.0 m/s: the width of the river, x = 3 km = 3000 m The time taken by the swimmer to cross the river, t = x/v = 3000 m/1 = 3000 sec Part B) the current carries him downstream at a rate of .91 m/s: x = vt = 0.91m/s * 3000 s = 2730 m
 2 years ago
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