Solution Found!
Answer: Two students are canoeing on a river. While
Chapter 3, Problem 89CP(choose chapter or problem)
Problem 89CP
Two students are canoeing on a river. While heading upstream, they accidentally drop an empty bottle overboard. They then continue paddling for 60 minutes, reaching a point 2.0 km farther upstream. At this point they realize that the bottle is missing and, driven by ecological awareness, they turn around and head downstream. They catch up with and retrieve the bottle (which has been moving along with the current) 5.0 km downstream from the turnaround point. (a) Assuming a constant paddling effort throughout, how fast is the river flowing? (b) What would the canoe speed in a still lake be for the same paddling effort?
Questions & Answers
QUESTION:
Problem 89CP
Two students are canoeing on a river. While heading upstream, they accidentally drop an empty bottle overboard. They then continue paddling for 60 minutes, reaching a point 2.0 km farther upstream. At this point they realize that the bottle is missing and, driven by ecological awareness, they turn around and head downstream. They catch up with and retrieve the bottle (which has been moving along with the current) 5.0 km downstream from the turnaround point. (a) Assuming a constant paddling effort throughout, how fast is the river flowing? (b) What would the canoe speed in a still lake be for the same paddling effort?
ANSWER:
Solution 89CP
Step 1:
Given
The velocity of canoe in upstream v-u = 2km/60 min
v-u = 2 km/h
Where u - velocity of stream
v- velocity of canoe
Upstream velocity = v-u
Downstream velocity = v+u