Asked by Brianna
A river has a steady speed of 0.640 m/s. A student swims upstream a distance of 1.00 km and swims back to the starting point.
(a) If the student can swim at a speed of 1.15 m/s in still water, how long does the trip take?
(b) How much time is required in still water for the same length swim?
(c) Intuitively, why does the swim take longer when there is a current?
(a) If the student can swim at a speed of 1.15 m/s in still water, how long does the trip take?
(b) How much time is required in still water for the same length swim?
(c) Intuitively, why does the swim take longer when there is a current?
Answers
Answered by
oobleck
time = distance/speed, so
(a) 1000/(1.15+.640) + 1000/(1.15-.640) = 2519.44 s ≈ 42 minutes
see what you can do with the other parts
(a) 1000/(1.15+.640) + 1000/(1.15-.640) = 2519.44 s ≈ 42 minutes
see what you can do with the other parts
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.