Chapter 3, Problem 49AP

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

Chapter
Section

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

# A hunter wishes to cross a river that is 1.5 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 12 km/h with respect to the water. What is the minimum time necessary for crossing?

To determine
The minimum time necessary for crossing.

Explanation

To cross the river in minimum time, the velocity of the boat relative to the water (vBW) must be perpendicular to the banks, that is, perpendicular to velocity of water relative to the shore (vWS) .

The following diagram shows the relative velocity of boat with respect to water.

### Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

#### The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started