Suppose someone finds herself with her rowboat on the bank of a river that is 3 km wide. Her campsite is on the other side of the river, 8 km down the river bank from her starting point. First, she will row her boat across the river, then walk along the river bank to her campsite. She can row 3 kph in the river, and walk along the river bank at 5 kph. We can assume that the current in the river is negligible. Toward what point, in miles, on the other side of the river should she row in order to reach her campsite in the least time? Note: Omit units of measurement from your answer. Round to the nearest thousandth. Solution:

Suppose someone finds herself with her rowboat on the bank of a river that is 3 km wide. Her campsite is on the other side of the river, 8 km down the river bank from her starting point. First, she will row her boat across the river, then walk along the river bank to her campsite. She can row 3 kph in the river, and walk along the river bank at 5 kph. We can assume that the current in the river is negligible. Toward what point, in miles, on the other side of the river should she row in order to reach her campsite in the least time? Note: Omit units of measurement from your answer. Round to the nearest thousandth. Solution:

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter2: Vectors

Section: Chapter Questions

Problem 83AP: A diver explores a shallow reef off the coast of Belize. She initially swims 90.0 m north, makes a...

See similar textbooks

Similar questions

A light plane flies north from Hamburg to Kiel (100 km) with an air speed of of 340 km/h through air. Compute the flight time without wind, with tail winds 80 km/h, and with winds from NNE of 80 km/h.
A boat travels 12km downstream and 16km upstream in 12 hours. If the rate of the current is 3kph, what is the rate of boat in still water?
How fast will you have to row directly across a 40 m wide river if the river is floating 5 m/s and you want to end up no farther than 10 m downstream?
A plane leaves the airport in Manila and flies 170 km east and then changes direction to fly 230 km 58° north of east, after which it makes an immediate emergency landing in a pasture. When the airport sends out a rescue crew, in which direction and how far should this crew fly to go directly to this plane? Use the Law of sines and cosines to solve this problem.
It takes a boat 3 times to travel upstream against a river current than the time it takes to travel downstream. Ifthe speed of the boat is 40 mph, what is the speed of the current?a. 10 mph c. 20 mphb. 30 mph d. 40 mph
Morgan takes her new toy boat out to the Morrison Dam. If the Ausable River is flowing at 4 m/s [W] and her toy boat is travelling at 0.54 m/s [N]. How long will it take her boat to cross the river if the river is 12 m wide? (please hand-write it and make it clear)
It takes 4 hours for a boater to travel 15 miles upstream and back. If the speed of the boat in still water is 8 mph, what is the speed of the current? Sally can clean the house in 8 hours, her father can clean the house in 6 hours, and her younger brother, Dennis, can completely mess up the house in 10 hours. If Sally and her father clean and Dennis plays, how long will it take to clean the house?
A river is 35 m wide. There is a current flowing at a velocity of 1.6 m/s [E]. You try and swim across the river going due North, you swim at a speed of 0.7 m/s in still water. When you reach the other side, how far downstream would the current have pushed you? Use a kinematic approach.
Omar swims across a river at a velocity of 2.50 m/s [30o N of E] with respect to the water. The current is 5.4 m/s [E]. She crosses the river in 425 seconds. Determine the width of the river.
If Nemo the fish is able to swim at a speed of 3 m/s and he is in the E.A.C. which is an amazing Current with a constant velocity of 4 m/s. Which of the following best describes the speed Nemo can achieve as relative to the bottom of the ocean?
Neglecting air resistance, determine to what height a vertical jet of water could rise if projected with a velocity of 30 m/s at an angle of 35º with the horizontal.
A boat, which moves at 11 miles per hour in water without a current, goes 117 miles upstream and 117 back again in 22 hours. Find the speed of the current to the nearest tenth.