Question: A swimmer is able to swim at a speed of 0.90 m/s in still water. (a) How long does it take the swimmer to go

A swimmer is able to swim at a speed of 0.90 m/s in still water.
(a) How long does it take the swimmer to go a distance of 1500 m in still water? Call this time t₁.

(b) The swimmer then decides to swim the same distance in a river having a current with a speed of 0.50 m/s. How long does this take if she swims with the current? Call this time t₂.

(d) Explain why t₁ - t₂ is not equal to t₃ - t₁.

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