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A swimmer can swim at 3 m/s in still water. If the river flows at 1 m/s, what is the swimmer's speed when swimming across the river?

Practice Questions

1 question
Q1
A swimmer can swim at 3 m/s in still water. If the river flows at 1 m/s, what is the swimmer's speed when swimming across the river?
  1. 2 m/s
  2. 3 m/s
  3. 4 m/s
  4. 5 m/s

Questions & Step-by-step Solutions

1 item
Q
Q: A swimmer can swim at 3 m/s in still water. If the river flows at 1 m/s, what is the swimmer's speed when swimming across the river?
Solution: Speed across the river = √(3^2 - 1^2) = √(9 - 1) = √8 = 2.83 m/s (approximately 2 m/s).
Steps: 0

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