speed upstream = 1.15 - .276 = .874 m/s
time upstream = 1.4 * 10^3/.874 = 1601 seconds
speed downstream - 1.15 + .276 = 1.426
time downstream = 1.4*10^3/1.426 = 982 seconds
total time = 1601+982 = 2583 seconds
2583/60 = 43 minutes
A river has a steady speed of 0.276 m/s. A student swims upstream a distance of 1.4 km and swims back to the starting point. If the student can swim at a speed of 1.15 m/s in still water, how long (in minutes) does the trip take?
How do I solve this problem? Thank You
2 answers
Why didn't you add vectorially
1 answer