a rowing team can travel 3000 m upstream in 50 sec The team

a rowing team can travel 3000 m upstream in 50 sec. The team knows they row 80 m/s in still water.
a. what is the speed of the river current?
b. how long does it take the team to travel downstream?

Solution

a. 3000m in 50 sec is 60 m/s (3000/50); so the river is flowing at 20 m/s (80 - 60)

b. their downstream speed is 100 m/s (80 + 20); so it takes them 30 sec (3000 / 100) to travel downstream



just a comment ___ 80 m/s is about 180 miles per hour